Specification Brand : BGTEC BulletPoint : Combination Drill & Taps BulletPoint1 : diameter 12mm,diamond length 10mm,Hex Shank Quick-fit BulletPoint2 : Multi-purpose drilling for granite & marble, masonry, concrete, tile/ceramic, stone BulletPoint3 : Wax inside for cooling,our Diamond Tipped Drill Bits have wax cores built-in which automatically absorb and dissipate heat as you go BulletPoint4 : Dry drilling and Use water for longer time.Notice:Please use with water when drilling granite BulletPoint5 : Vacuum Brazed diamond technology provide very high efficiency,cuts faster and lasts longer Color : Orange Configuration : configuration CustomerPackageType : 1 CuttingAngleString : 45.0 degrees ExternallyAssignedProductIdentifier : 7754856435136 ExternallyAssignedProductIdentifier1 : 769891571449 ExternallyAssignedProductIdentifier2 : 0769891571449 ExternallyAssignedProductIdentifier3 : 00028877449876 FinishType : Diamond GpsrSafetyAttestation : 1 IncludedComponents1 : 2 X 22 IN SDS MAX ONE PC CORE BIT IncludedComponents2 : 2 X 22 IN SDS MAX ONE PC CORE BIT IncludedComponents3 : 2 X 22 IN SDS MAX ONE PC CORE BIT IncludedComponents4 : 2 X 22 IN SDS MAX ONE PC CORE BIT IncludedComponents5 : 2 X 22 IN SDS MAX ONE PC CORE BIT ItemName : BGTEC Dry Diamond Drill Bits 5pcs 1/2 Inch 12mm with Quick Change Hex Shank for Granite Marble Porcelain Tile Ceramic ItemPackageDimensions_Height : 9.8044 centimeters ItemPackageDimensions_Length : 1.905 centimeters ItemPackageDimensions_Width : 9.7028 centimeters ItemPackageQuantity : 5 ItemShape : Rectangular ItemTypeKeyword : core-drill-bits Manufacturer : BGTEC Material : Artificial diamond and Steel body Material1 : Blend Material2 : Blend Material3 : Blend Material4 : Blend Material5 : Blend ModelName : QQKIQPZB ModelNumber : DBT2212U5 NumberOfFlutes : 3 NumberOfItems : 1 NumberOfPieces : 1 PackageLevel : unit PartNumber : DBT2212U5 Pattern : Solid ProductDescription : Product Name: Hex Shank Quick-fit drilling bits Color: Orange. Application : Dry drilling for granite & marble, masonry, concrete, tile/ceramic, stone..... Specification: Hex shank Quick-fit , available diameter 6mm 1/4", 8mm 5/16", 10mm 3/8", 12mm, 14mm, diamond length 10mm 3/8" Feature: 1.Wax inside for cooling, Dry drilling 2.Vacuum Brazed diamond technology provide very high efficiency, multi-purpose drilling 3.Long life drilling Quick Tips 1.Place the drill at a 45 degree angle 2.Drilling till the hole start to form 3.Bring the drill up into upright position 4.Continue to drill and swaying the machine along a circle