Specification Brand : LEKOMESH BulletPoint1 : 【PACKAGE INCLUDE】8pieces of 1/4inch (6mm) hole saw drill bits + 2pieces of 1/4inch (6mm) carbide drill bits, Total length 65mm, Diamond height 10mm, Diamond Grit: #50/60, Triangle Shank. BulletPoint2 : 【DRY DRILLING】Filled with cooling wax and spiral grooves design, help heat dissipation and chip evacuation, cutting and cooling can be done dry, with higher efficiency and better performance. BulletPoint3 : 【APPLICATION】Designed for drilling ceramic/porcelain tile, granite & marble. Core tile drill bits are intended for both industrial use under hard working conditions and domestic use. BulletPoint4 : 【WHY CHOOSE US】High-quality Diamond Grain and Vacuum Brazing Technology provides much longer working life, fast and smooth drlling, durable and sturdy. BulletPoint5 : 【RECOMMENDED MACHINE】Suitable for Hand Drill, Cordless Drill, Bench Drill. Recommended RPM: 2000-5000. The faster the speed, the longer the service life. Do not use impact mode. Color : Gold FinishType : Diamond GpsrSafetyAttestation : 1 ItemName : LEKOMESH Diamond Drill Bit Kit - 8pcs 1/4 Inch (6mm) Diamond Hole Saw & 2pcs 1/4 Inch (6mm) Carbide Drill Bit with Triangle Shank for Porcelain Tile Drill Bits for Ceramic Marble Granite Stone ItemPackageDimensions_Height : 0.8 centimeters ItemPackageDimensions_Length : 6.7 centimeters ItemPackageDimensions_Width : 6.2 centimeters ItemPackageQuantity : 10 ItemTypeKeyword : hole-saw-sets Manufacturer : LEKOMESH Material : Diamond NumberOfFlutes : 2 NumberOfItems : 10 NumberOfPieces : 10 PackageLevel : unit PartNumber : LE2-GA-L09 ProductDescription : Features: Split tip pilot drill prevents damage and deviation by gradually guiding cutter to material. Over drill flange built in to prevent penetration beyond the sheet metal. Can cut precise holes quickly in stainless steel, mild steel, iron, copper and brass.