Specification Brand : BGTEC BulletPoint1 : 1pc only Adapter (no any drill bits, no any machine) BulletPoint2 : 5/8-11 male thread, 3/8" Hexagon Shank, total length 53MM, shank length 28MM BulletPoint3 : 5/8-11 thread core bits can be fitted on hand drill or electric drill BulletPoint4 : Good quality steel, long life, and Surface Nickel plating BulletPoint5 : Use your diamond core bits for granite or diamond hole saw for grinder with standard drill CustomerPackageType : Standard Packaging ExternallyAssignedProductIdentifier1 : 791180030221 ExternallyAssignedProductIdentifier2 : 0791180030221 FinishType : Nickel ItemName : BGTEC Core Drill Bit Adapter for Threaded Diamond Hole Saw Core Drill Bit 5/8"-11 Male to 3/8" Shank for Core Drilling Grinding Disc ItemPackageDimensions_Height : 6.5024 centimeters ItemPackageDimensions_Length : 2.8956 centimeters ItemPackageDimensions_Width : 2.8956 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : hole-saws Manufacturer : BGTEC ModelNumber : AD0358HEX NumberOfItems : 1 PartNumber : AD0358HEX ProductDescription : Item: 1pc Adapter 5/8-11 male thread to 3/8 hexagon shank for 5/8-11 thread drill core bits grinding disc Quantity: 1pc only Adapter (no any drill bits, no any machine) Specification: 5/8-11 male thread, 3/8"" Hexagon Shank, total length 53MM, shank length 28MM Application: 5/8-11 thread core bits can be fitted on hand drill or electric drill Feature:Good quality steel, long life, and Surface Nickel plating