The Best Core Drill Bits of 2023

Add Versatility to Your Tool: 5 Pieces of Dry Diamond Core Drill Bits Kit for drilling holes diameter of 1/4 inch(6mm), 3/8inch (10mm), 5/16inch (8mm) and 1/2inch (12mm);

Vacuum Brazed Diamond Technology: Great for drilling clean holes to hard materials especially tiles, porcelain ground, granite ceramic glass mirror marble stone masonry brick (not for wood)

Dry Drilling Design: Diamond Drill Bit integrated with wax lubricant inside which melts while dry drilling and cools the cutting surface; Water can be used as additional cooling to prolong the life of the bit

Unique Details: Diamond coating enhances the drilling speed; Round Shank compatible with most machines such as Hand Drill, Angle Grinder, Bench Drill; Side flutes help to remove debris and drill holes smooth and fast; Depth mark useful for precise project

Worry Free: This Diamond Drill Bits set comes with a portable storage case for convenient use and store. If you encounter any problems in using the products, please feel free to contact us for satisfactory customer service

EFFICIENT: The Bosch SDS-max carbide-tipped rotary hammer core bit features an effective wave design to transfer energy for up to 40 percent speedier drilling versus other bit designs.

POWER: With an integral shank, the HC8555 offers better power transmission and is designed to allow smaller hammers to drill larger holes.

VERSATILE: This core bit is versatile in application with materials including concrete, brick, and block.

DIMENSIONS: The Bosch HC8555 SDS-max core cutter measures 4-inches in diameter. The useable length is 17-inches and the overall length is 22-inches.

Only for use with SDS-max rotary hammers

The bit diameter is 4 inches, and the shank diameter is 0.71 inches.

SPECIFICATIONS - This diamond core drill bit made of premium metal components and high quality diamond grits - Diameter: 3" - Useful length: 18.7” - For wet drilling ONLY - Max RPM 800.

SMOOTH FAST DRILLING - This premium core drill bit is produced specifically for wet drilling of concrete and reinforced concrete.

ENGINEERED FOR EXACT FITTING - With 11/4" UNC connection, this core drill bit allow easy and fast assmbling to common fixed core or hand-held drilling machines.

FOR THE PERFECT JOB EVERY TIME - The innovative design of this diamond core drill bit allows it high drilling performance while keeping a long lifetime. Whether you are a plumber, construction worker, or DIY enthusiast this segmented core drill bit is made for you.

TOOLGAL, A NAME YOU CAN TRUST - For over 50 years TOOLGAL has been a global leader of masonry diamond tools developing and manufacturing. When you buy this core drill bit or any other tool from TOOLGAL, you are purchasing it directly from the factory.

8 inch Max Drilling Diameter: Our core drilling machine generates extreme power because of its 3980W copper motor. Maximum Speed: 750RPM. Maximum Coring Diameter: 8"/205 mm. More importantly, the 4.25"/108 mm core bit in the picture is included.

Durable Construction: As the machine will work upside down, so water would unavoidable flow on to the drill machine. In this case, our drilling rig has a rustproof steel forged output shaft and waterproof copper water inlet for a long-lasting water supply.

Thoughtful Security Design: We also provide overload protection system and an upgraded cooling system. They are designed for avoiding burn-in and prolonging the service lifespan of the drilling press machine.

Ergonomic Handle & Stable Base: It features an ergonomic handle and large base support for effortless drilling or getting oblique holes. The aluminum guide rail makes the drill rig's movement more smooth and accurate.

Wide Application: The wet diamond core drilling rig can be widely used in drilling reinforced concrete, red brick, marble, and other materials. It is perfect for installing air conditioners, pipes, stair railings, and repairing highways, etc.

【MAIN PAREMETER】Segment height: 10mm / 0.39"; Drill diameter：4.5"/5"/5.5" （114mm/127mm/140mm）; Bit length: 16.5"(420mm)overall length; Cutting depth: 13.8"(350mm); Thread size: 1-1/4" threads

【HIGH EFFICIENCY】The wet diamond core drill bit allows you to drill faster and improves your drilling efficiency. Ideal for plumbers, electricians or general contractors.

【WIDE APPLICATION】The high-stability wet diamond core drill bit is used for wet drilling of medium aggregate steel wire slurry or light steel concrete, suitable for drilling hard concrete, blocks, bricks, masonry and other materials.

【PREMIUM MATERIAL】The substrate has high hardness, is not easy to deform and the raised blade is sharp and durable. It is an excellent choice for various conventional drilling.

【GUARANTEE】We are committed to providing you with high-quality customer service. Please feel free to tell us if you have any questions. We will try our best to solve them for you as soon as possible.

7/16" Diamond Core Bit for Glass and Tile; Fits your hand drill or drill press

FREE 4 page drilling instruction guide. FREE 5 page decorating ideas guide

FREE shipping in the US. No risk - 100% money back guarantee

EASY - Use your kitchen scrubbing sponge to hold the glass and cool the bit. We’ll show you how

You’ll make wine bottle lamps, lighted glass block, bird feeders and more

Bit Size: 4-1/2 in.

Drilling Depth: 6 in.

Bit has 13/16-inch female threads.

10 mm segment height for improved operating life.

For use on block, brick, concrete, and other materials.

diameter 6mm 1/4 Inch,diamond length 8mm,Round shank

Multi-purpose drilling for granite & marble, masonry, concrete, tile/ceramic, glass, hard plastic,All-Purpose Drilling

Wax inside for cooling,our Diamond Tipped Drill Bits have wax cores built-in for Cooling and Lubrication.Special Designed with Hole and Groove in the Side of Drill Bit for Removing Stone Chips

Dry drilling without water,Use water for longer time

Vacuum Brazed diamond technology provide very high efficiency,cuts faster,durable and sturdy

10 Sizes(Diameter): 4mm(4/25"), 6mm(1/4"), 8mm(5/16"), 10mm(3/8"), 12mm(1/2"), 15mm(3/5"), 16mm(5/8"), 18mm(11/16"), 20mm(3/4"), 22mm(7/8"), 30mm(1-1/5"). Satisfy most of your different needs.

Rustless & Durable: Made of high strength Carbon Steel with smooth nickel plating surface to extend the service life.

Quick, Sharp & Smooth Cut: Coated with high quality Diamond to enhance the drilling speed and creates a sharp, high precision and smooth cut with no broken edges In Seconds.

Application: Drill Glass, Tile Bottles, Blocks Jars, Fiberglass Porcelain Tile Ceramic, Slate Mable, Granite Light Stone.Not for use on Concrete or for depths beyond about 1/2".

Attention: Please keep the speed in 800-1000 per minute, keep adding water to keep the drill cool, strictly prohibit from dry drilling.

✔ Satisfied Size - 6mm/0.23", 8mm/0.31", 10mm/0.39", 12mm/0.47", 14mm/0.55", 16mm/0.62", 18mm/0.7", 22mm/0.86", 26mm/1.02", 32mm/1.26"

✔ Ideal Application - This diamond coated core drill bit removes a complete circle from glass, marble, tiles,granite, ceramic or other.They are perfect for drill glass, tile bottles,blocks jars, fiberglass porcelain tile ceramic, slate Mable, granite light stone

✔ Super Material - These diamond drill bits made of high-speed steel that is durable and have a long sevice life,which are high quality and good performance that excellent for making clean and accurate hole.

✔ Sharp&Smooth Cut - Coated with high quality diamond, the diamond hole saw creates a high precision, smooth cut with no broken edges. Reduced drill speeds, low drill pressure and increased use of water lubrication will extend drill bit life considerably

✔ Note - When you using the diamond drill bits, please use lubrication (water),otherwise the diamond core drill will burn.Not for use on Concrete or for depths beyond about 1/2".