SDS Drill Chuck Capacity Range: 2-13mm (1/16-1/2 Inch); Mount Thread: 1/2-20UNF Keyless chuck finger-tightens for easy and quick changing of drill bits. Quick-change SDS shank for electric hammer Unique torque thrust bearing allows for greater clamping force, effectively preventing drill bits from loosening, providing reliable performance Suitable for impact drills with power above 1050W. Compatible with cordless impact drivers and wrenches for use as a regular power drill Material: Metal Color: Black Package Contents: 1 x Metal Lathe Only the above package content is included; other products are not included Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1-3cm