Capacity Range - 1.5-13mm (1/16-1/2 Inch); Mount Thread: 1/2-20UNF Versatile Adapter - Ideal drill conversion tool. Converts SDS-Plus bits, 1/4 inch hex shank, 1/2 inch socket square female adapter, and hex handle converter to transform a power impact wrench into a drill or grinder in seconds. Keyless Drill Chuck - Quickly loosen or tighten the chuck by hand for easy bit changes without a chuck key. 3-Jaw Design - Securely holds round-shank drill bits from 1.5mm to 13mm. Durable & Efficient - High precision threading and tapered design with rust-resistant Cr-Co coated body and electrophoretic enameling coating. Suitable for heavy-duty drilling on hard materials such as walls or stone. Color: As shown Material: Metal Package Contents: 1 set x drill chuck for impact driver Note: Light reflection and different displays may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3cm.