Specification Brand : BRSCHNITT BulletPoint1 : Size --4pcs diamond drill bit6/6/8/10mm&1pc Carbide Drill bit,1/4"(6mm), diamond height 8mm, total length 65mm,triangle shank diamond core drill bit BulletPoint2 : Widely Use--Carbide Triangular Drill bit mainly used to provide accurate positioning for diamond bit BulletPoint3 : Wide Applications --Diamond core bits are worked great for dry drilling holes through hard porcelain tile, ceramics,bathroom tile,granite & marble, masonry, concrete, glass, hard plastic with ease. Using water could prolong the lifetime BulletPoint4 : High Performance --Special design of spiral groove at the top of bit helps for chip removal,Wax inside the drill bit helpful for Cooling and Lubrication BulletPoint5 : Machine --Suitable for any electric drill,hand drill,Bench Drill, When use Angle Grinder,please install angle grinder drill chuck,Recommend RPM: 2000-5000.The faster the better(Cannot be used on machines below 2000 rpm). CompatibleFastenerDescription : Phillips screws DriveSystem : Phillips ExternallyAssignedProductIdentifier1 : 0791180030238 ExternallyAssignedProductIdentifier2 : 791180030238 ExternallyAssignedProductIdentifier3 : 40028877043478 ExternallyAssignedProductIdentifier4 : 00028877364964 FinishType : Diamond GpsrSafetyAttestation : 1 ItemName : Dry Diamond Drill Bit Set,BRSCHNITT 5pcs 1/4,5/16,3/8 inch Masonry Drill Bits with Triangle Shank for Porcelain Tile Ceramic Stone Granite Marble,Dry Drilling Diamond Core Drill Bit Kit ItemPackageDimensions_Height : 8.3 centimeters ItemPackageDimensions_Length : 1.4 centimeters ItemPackageDimensions_Width : 7.8 centimeters ItemPackageQuantity : 5 ItemShape : Rectangular ItemTypeKeyword : core-drill-bits Manufacturer : BRSCHNITT Material : Diamond Material1 : Blend Material2 : Blend Material3 : Blend Material4 : Blend Material5 : Blend ModelName : DW2022B6 ModelNumber : AD0358HEXU2 NumberOfBoxes : 1 NumberOfFlutes : 1 NumberOfItems : 5 NumberOfPieces : 5 PackageLevel : unit PartNumber : BDB54905405R203 Pattern : Solid ProductDescription : Item: 2pc/set Adapter 5/8"-11 male thread to 3/8 INCH hexagon shank for 5/8"-11 drill core bits or grinding disc Quantity: 2pc only 5/8"-11 male thread to 3/8 inch Adapter Specification: 5/8"-11 male thread, 3/8" Hexagon Shank, shank length 28MM, total length 53MM Feature: 1. Good quality steel, long life, and Surface Nickel plating 2. 5/8"-11 thread core bits can be fitted on hand drill or electric drill