Specification Brand : CHICHIYANG BulletPoint : Micro Drill Bits BulletPoint1 : The dry diamond drill bit uses vacuum brazed technology, which allows it to be used at a higher temperature to cut through hard porcelain tile, ceramics, marble, and slate with ease. BulletPoint2 : The integrated lubricant aids cooling and extends the lifespan, meaning there is no requirement for additional lubricant. BulletPoint3 : Vacuum Brazed Diamond drilling bits for dry drilling of granite, marble, masonry, concrete, tile/ceramic, glass, hard plastic, etc. BulletPoint4 : Integrated lubricant aids cooling and extends the lifespan, meaning no additional lubricant is required. BulletPoint5 : Hexagonal Shank, which prevents slippage in the chuck. Color : Hexagonal ExternallyAssignedProductIdentifier : 7341569513086 ItemName : 5Pcs 6mm Dry Diamond Drill Bits Set, (1/4") Drill Bits Hex Shank for Tile Ceramic Marble Porcelain Glass ItemPackageDimensions_Height : 2 centimeters ItemPackageDimensions_Length : 10 centimeters ItemPackageDimensions_Width : 8 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : spade-bits Manufacturer : CHICHIYANG ModelNumber : CNRCWROG NumberOfItems : 1 NumberOfPieces : 1 PartNumber : CUSE092100000 ProductDescription : Features: The dry diamond drill bit uses vacuum brazed technology, which allows it to be used at a higher temperature to cut through hard porcelain tile, ceramics, marble, and slate with ease. The integrated lubricant aids cooling and extends the lifespan, meaning there is no requirement for additional lubricant. Vacuum Brazed Diamond drilling bits for dry drilling of granite, marble, masonry, concrete, tile/ceramic, glass, hard plastic, etc. Integrated lubricant aids cooling and extends the lifespan, meaning no additional lubricant is required. Hexagonal Shank, which prevents slippage in the chuck. 6.35mm (1/4") quick change hex dry drill bit, compatible with most power drills, rechargeable drills, manual wrenches, and driver chucks. Laser etched diameter on body, for ease of identification.