13 best dry core bits

Product description

#30/40 diamond grit, premium quality, designed for drilling masonry, concrete block and soft brick - Diameter: 2-1/2 inches - Thread: 5/8"-11 threaded - Drilling depth: 9.5" - High diamond concentration and quality guarantee longer coring life

• #30/40 diamond grit for drilling soft brick, soft masonry, concrete block
• Diameter: 2-1/2 inches
• Thread: 5/8"-11 threaded
• Drilling depth: 9.5"
• High diamond concentration and quality guarantee longer coring life, solid poured concrete Not commended

User questions & answers

Question:	What adapter and pilot combo would I need to use this bit with my Bosch hammer drill
Answer:	Yes, all core bits are measured by outside diameter. The inner is about 1/4" smaller, but that's not something we control for in manufacturing
Question:	Have dewalt spline hammer drill & a sds adapter for small bits & hd milwaukee right angle drill which to use for 8" concrete
Answer:	Yes it can. However, if you have a lot of rebar to go through, this series of core bits will perform better: https://www.amazon.com/dp/B078ZQTB23
Question:	Need a 2 1/2 hole in street curb for drainage pipe, curb 6 - 6 1/2 inches thick, have Dewalt dwe4011 angle grinder w/ 5/8"-11 spindle, will this do it
Answer:	Hi, you technically Can hook this up to a grinder with a 5/8" thread, but the RPM of a grinder is typically too high to operate a wet core bit efficiently. The recommend rpm for 1.5" diameter wet bit is around 2000
Question:	I have an sds max bulldog drill. What adapter do I need for this Bit
Answer:	I dont see why not, im sure the Hulk could hold it in place, the drill made for this weighs 75lbs plus.

Product description

Steel Dragon Tools 4" (102 mm) Dry Diamond Concrete Core Drill Bit

Steel Dragon Tools® 4 in. (102 mm) dry diamond laser-welded masonry core drill bit. For use dry drilling asphalt, block, brick, concrete, pavement, and other materials. Dry drilling only.

• Bit Size: 4 in. (102 mm)
• Drilling Depth: 16 in.
• Spindle Thread: 1-1/4 in. – 7
• For use on asphalt, block, brick, concrete, pavement, and other materials.
• Dry drilling only.
• 10 mm laser-welded split segments for improved operating life.
• Fits Hilti® and Milwaukee® drill rigs.
• Overall Height: 16-1/4 in.

• Bit Size: 4 in. (102 mm)
• Drilling Depth: 16 in.
• Spindle Thread: 1-1/4 in. - 7
• For use on asphalt, block, brick, concrete, pavement, and other materials.
• Dry drilling only.

User questions & answers

Question:	Does this bit cut steel
Answer:	Our wet core bits use a 42mm or a large crescent wrench to loosen and tighten the bit. Our Z1 drill uses a 36mm wrench to secure the spindle.
Question:	Will this cut through rebar
Answer:	This core bit has a 1-1/4" thread. Many hammer drills have a 5/8" thread, but check with your manufacturer to confirm. The core bit cannot be used with the hammer action turned on.
Question:	Someone in the review said that you need a fast drill and not a rotary drill. Is this true
Answer:	Yes. Bluerock Wet type coring bits are designed to cut through rebar reinforced concrete.
Question:	Will a pilot bit fit in this drill? If so, what size
Answer:	The core drill bit is manufactured in China and comes with a one year warranty against manufacture defects. Please let us know if there is anything else that we can assist you with. Thank you for your interest!

Product description

Designed for drilling masonry, concrete block and brick - Pilot Bit Included - Multiple sizes available - 4" Diameter - Thread: 1/2" Shank - Drilling depth: 9.5" - High diamond concentration and quality guarantee longer coring life

• #30/40 diamond grit for drilling soft brick, soft masonry, concrete block
• Diameter: 4 inch - Pilot Bit Includedes
• Thread: 1/2" Shank
• Drilling depth: 9.5"
• High diamond concentration and quality guarantee longer coring life, solid poured concrete Not commended

User questions & answers

Question:	Will this cut through stucco? i think it's 1/2 to 3/4 inches thick. based on info i see on the questions, it appears that it will
Answer:	Although I have never tried to use this with anything but the saws that came with it I believe the threads are metric like the core bit sizes. If that is the case no it will not work on 5/8" standard threads.
Question:	Can these bits be used to go through Corian
Answer:	The mount connector size is M22 if that’s what you’re asking
Question:	Would this work for drilling a 6 inch post
Answer:	If you’re drilling into concrete yes. I highly recommend a hammer drill.
Question:	Will this work with a cordless impact drill? (DeWalt
Answer:	No idea. 65mm was used in cinder block and worked well. 30mm was used in 4" concrete and it worked pretty well. Best of lucks

Product description

Designed for drilling masonry, concrete block and brick - Pilot Bit Included - Multiple sizes available - 1-1/2" Diameter - Thread: SDS Plus - Drilling depth: 9.5" - High diamond concentration and quality guarantee longer coring life

• #30/40 diamond grit for drilling soft brick, soft masonry, concrete block
• Diameter: 1-1/2 inch - Pilot Bit Included
• SDS Plus - Rotary Mode ONLY
• Drilling depth: 9.5"
• High diamond concentration and quality guarantee longer coring life, solid poured concrete Not commended

User questions & answers

Question:	Is this good for brick and concrete block ? Putting a mini split
Answer:	Probably. I don’t have a cat but I would think it would work fine.
Question:	Is the sds plus arbour available to purchase separately ? https://www.amazon.com/gp/product/b077r6tzny/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=utf8&th
Answer:	Not the one I bought, but I suppose you could have 4 rechargeable AA batteries and use them.
Question:	Is this 3" id or od
Answer:	Hell to the yea
Question:	I need to drill a hole through brick to accommodate a 4 inch vent pipe. Will the 4 inch bit do the job, or do I need something slightly larger
Answer:	It does include the nail guard and although maybe not as powerful at the 7760 it is quieter and did the job quickly. Our beagle has anxiety and was much calmer with this dremel.

Product description

Vortex Diamond provides premium grade laser welded dry drill core bits with high concentration diamond aligned segments. The product is designed for for dry drilling soft brick, soft masonry, concrete block using hand-held tools. Please note that solid poured concrete is not commended.

• Vortex Diamond provides premium grade laser welded dry drill core bits with high concentration diamond aligned segments.
• It is designed for for dry drilling soft brick, soft masonry, concrete block using hand-held tools. Solid poured concrete is not commended.
• Laser cut coolant slots in the barrel.
• Arbor 5/8"-11 threaded. Tube length 9".
• Diameter 4-1/2 inch.

Product description

Designed for drilling masonry, concrete block and brick - Pilot Bit Included - Multiple sizes available - 4-1/2" Diameter - Thread: 5/8"-11 threaded - Drilling depth: 9.5" - High diamond concentration and quality guarantee longer coring life

• #30/40 diamond grit for drilling soft brick, soft masonry, concrete block
• Diameter: 4-1/2 inch - Pilot Bit Includedes
• Thread: 5/8"-11 threaded
• Drilling depth: 9.5"
• High diamond concentration and quality guarantee longer coring life, solid poured concrete Not commended

User questions & answers

Question:	Will this work with eneacro 1-1/4 inch sds-plus 13 amp heavy duty rotary hammer drill
Answer:	Thanks for your asking. We recommend you use it at fast drill speed. If you want to work at slow drill speed, it is also okay.
Question:	can it be used with a light hammer drill
Answer:	yes but its only about 4" deep
Question:	Can this he used to drill a hole on a concrete wall with corrugated steel rebar inside on it
Answer:	Thanks for your question. There are only 18mm and 20mm diamond core drill bits in this kind diamond hole saws. But we have 3/4" vacuum brazed diamond hole saw for drilling marble. It is not laser welded diamond core drill bit, it vacuum brazed diamond hole saw. But drilling marble is enough, you could purchase it.
Question:	How does this attach to a hole hog drill
Answer:	No, This is definitely not for metal. The diamond core bits are used primarily for drilling faucet holes in granite and marble. Granite in MUCH harder than concrete. My core bits made specifically for the granite industry would punch a hole through 3cm granite in about 3 minutes. Harder granite like absolute black and tropic brown would take 5 minutes or so. I would also keep them wet to reduce the temperature. Occasionally, I would need to cut through the stainless sink when a customer wanted to use a sink I did not recommend for the cabinet size. It would go through the 18-16 gauge stainless sink in about 2 minutes but it would produce more heat that the bit could withstand, even submerged in water. It would heat up and expand, throwing the diamonds out of the teeth and leaving the bit useless until you sharpened it for 20 minutes in a concrete masonry unit.

Product description

Instruction:



JDK Diamond Core Drill Bit 1-3/8 '' is a drill specifically designed to remove a cylinder of material,

much like a hole saw.The core part is the segment.our segments are made with premium

diamond, they are more sharp and durable.This type only used for drill the granite. Maximum

speed for the bits are 4500 RPM.

Quantity: 1pc

Thread: Arbor 5/8-11 Female Thread

Diameter: 1-3/8''(35mm)

Segment: Segment Length 16 mm,Width 10mm,Thick 3mm

Machine: Polishers or Grinders

Application: Works DRY great on GRANITE

RPM:Available RPM is 3000-6000. Max speed 6000 RPM.

The common size:32mm.35mm.38mm.



About JDK:



JDK has been engaged in manufacturing and exporting worldwide quality diamond tools

since 1995. JDK products include a series of Cutting, Grinding, Profiling and Milling tools for

processing hard and fragile materials, such as Natural Stone, Ceramic Tile, Concrete etc.

• Diameter is 1-3/8'',5/8''-11 thread install on polishers or grinders
• It is designed for dry drill core to granite on the job site
• Premium grade of diamond segment has high efficiency.it will be more aggressive and durable. Burn resistant braze on the wall tube can protect the substrate from cracking
• Drilling dozens of holes according to material
• Please add lubricants frequently to avoid sparks while using this product, can also enhance the working life by doing this

User questions & answers

Question:	Does this drill need water in the working
Answer:	You need a core drill rig to use it.
Question:	How deep
Answer:	it does not have any place to mount a pilot bit.

Product description

The professional quality laser welded dry diamond core bits offers the best lifetime available on market Laser wielded Segment height 0.400” Length: 11” long to produce 10” core 5/8”-11 thread

User questions & answers

Question:	Can this be used to cut a street curb for drainage/curb-cut/curb core
Answer:	If you have a 1/2" arbor hole hog, you can consider using this variant instead: https://www.amazon.com/dp/B01N4TBLEQ?th=1
Question:	Dose the displayed size represent the inside or outside diameter
Answer:	No it is designed for concrete.
Question:	Will this cut through rebar if it encounters it
Answer:	Normally diamond tipped core bits do cut through rebar. I have not tried it with this brand yet.

Product description

Although DAMO Dry / Wet Core Bits are designed for use on the job site without using water,wet cutting is recommended whenever possible. They fit on high-speed angle grinders with a 5/8" -11 spindle. Adopting the Vacuum Brazed Tech., they provide the best cutting performance and can drill through the toughest 1-1/4" granite or engineered stone countertop. They can be used to drill the faucet-mounting holes in countertops and vanities. They can also be adapted for use in construction trades wherever holes are needed for water, gas and electrical piping, especially when natural stone, concrete or ceramic tile is already installed. We recommend a template be used when drilling free-hand and a scrap piece of stone be clamped under the stone to prevent excessive chipping on the backside of the stone. Available in 1/4",3/8",1/2",5/8",3/4",7/8",1", 1-1/4", 1-3/8",1-1/2",1-3/4",2",2-1/2" and 3" sizes.

You may buy seperately our core bits adapter to use with the normal electric hand drills which take 3/8" shank.

We DAMO Diamond Tools, LLC holds exclusive distribution to DAMO Trademark products as you can see clearly marked from the picture on the product listing.

• Diameter 1";
• 5/8-11 thread fits on most popular high-speed grinders;
• Use on the job site without using water;
• Aggressive cutting on granite and engineered stone;
• Max. drilling depth 2", Max. speed 11,000 RPM.

User questions & answers

Question:	Is this good for porcelain too
Answer:	Yes, ideally you will miss the rebar, it took me 1 hour to drill a 8” cement wall, use a corded hammer drill if possible.

Product description

TOC BLOC Dry Diamond Core Bit for Concrete 5/8-11 Thread - 2". TOC BLOC dry diamond core bits are for contractors to drill concrete and masonary blocks.

• 9" tube length, 10" overall length
• 7.5mm segment height.
• Laser welded turbo style diamond segments
• Hard bond drilling concrete and masonary blocks, bricks with long life
• Can be used dry or wet

User questions & answers

Question:	Can this drill bit be used with the hammer setting on the drill
Answer:	I use mine dry Everytime. And it works bad ass. No need to clean up mud everywhere. Happy customers are the best customers.
Question:	Will this cut through granite
Answer:	I uesd it for drill granite,the deepth of core is about 2'',but I think it can be drill more.
Question:	Will this cut through granite
Answer:	This particular SKU has a 5/8"-11 connection. If you want to use an SDS plus drill (rotary only mode), please use this one instead for the right connection: https://www.amazon.com/dp/B07LCXCFD7?ref=myi_title_dp We do advise caution when using SDS connection on bigger diameter core bits, because the small size of the SDS connection can often twist the adapter. If you have 1/2" chuck or SDS MAX drills, those are often preferred over SDS Plus drills.
Question:	will it cut through rebar in concrete wall
Answer:	It's unlikely this 5/8"-11 arbor will fit a hammer drill, but it does, you sure can. Remember to turn the hammering mode off. Other likely connection that might work for you: 1/2" chuck connection: https://www.amazon.com/dp/B01NAYIEZG SDS plus connection: https://www.amazon.com/dp/B077R5QRJN SDS MAX connection: https://www.amazon.com/dp/B07QDQ13TK

Product description

• Diameter: 3"
• Barrel length: 10"
• Arbor size: 5/8"-11
• Segment thickness: 3.50 mm
• Segment height: 11 mm
• Segment width: 24 mm
• Number of segments: 4
• Powder coated red
• Segmented rim
• Slotted barrel promotes air flow and saves weight
• For use with concrete core drills only
• Designed for dry use drilling applications
• Recommended for use on asphalt, green concrete, stone, concrete, pavers, brick and hard brick

• 1-3/8"(35mm) Laser Welded Diamond Dry Drilling Core Bits.
• Diameter:35mm(1-3/8 inch), Total length: 100mm, Thread: 5/8"-11.
• Dry or Wet Drilling - use wet will greatly prolong the segment life
• Designed for drilling hard granite, marble, engineering stone, concrete, brick
• Easily operate on Angle Grinder; Need an adapter for drill or other machine, such as SDS,hex,Round plus shank

User questions & answers

Question:	Is this bit intended to be used at a slow or fast drill speed
Answer:	I used this bit to core through a 5 inch concrete slab with wire mesh, 3/8 rebar and metal floor decking, with no problem. Took approx. 15-20 minutes per hole FYI don't force the bit.
Question:	Could you use this for drill through boulders
Answer:	Thank you for contacting us! These bits are made for Reinforced Concrete, Asphalt, Block, Pavement, Brick etc. They will not work or granite, tile, glass or any of those applications. Please let us know if there is anything else that we can assist you with today!
Question:	Necesito una broca de marmol
Answer:	I am not familiar with a bosh hammer drill. You can use any adapter that has a 1/4" x 7 thread size as that is what is on the drill bit.
Question:	can this go through metal
Answer:	Yes it cut rebar in concrete

Product features

Application and Notice

1. Drilling hard granite, marble, engineering stone, concrete, brick,masonry and all similar materials
2. Ideal for drilling the faucet mounting holes in stone countertops, plumbing lines in showers and vanities
3. Dry or Wet Drilling - use wet will greatly prolong the segment life

Which Machine?

1. With 5/8-Inch-11 Thread; Easily operate on Angle Grinder
2. If you fit them on drill or other machine, you need an adapter, such as SDS, hex, Round plus shank...

Notice:

1. Do not use this bit in hammer or Impact mode
2. Do not give too much pressure or sway the core bits when working
3. If find hard to drill, take a break and check the segments.
4. If the segment become blunt, please try to sharp it by drilling a hole on the abrasive concrete and then continue to drill the hard material.

Step 1

• Fix it on angle grinder tightly and rightly.
• Turn on the angle grinder and let the core bits rotating in the air to check if there is balance problem

Step 2

• Hold the machine very steadily and give gentle pressure
• Start drilling as per following instructions
• 1) place the drill at a 30 degree angle, it will help to position
• 2) Drilling the material till the hole start to form

Step 3

• 3) Bring the drill up into upright position slowly then keep drilling vertically.
• Do not give too much pressure or sway the core bits when working

Product description

Product name:Diamond core drill bits for stone

Size(inch):1-38"

Segment height:10mm

Our diamond stond dry core bit fit on a high-speed angle grinder.

It provides the best cutting performance and can drill through the toughest 1-3/8" granite or engineered stone countertop at the job site without using water. Not only is this convenient but it also increases productivity by cutting down on the amount of clean up needed when using water.

• Diameter is 1-3/8'',5/8''-11 thread install on polishers or grinders
• It is designed for dry drill core to granite on the job site
• High frenquency/Laser welded available
• Vacuum Brazed side protection offers clean cut & steel core protection.
• Use wet or dry drilling for stone, wet using will greatly prolong the segment life

User questions & answers

Question:	Where is it manufactured
Answer:	It can cut concrete with minor rebar, but it’s not specially made for rebar cutting