Capacity Range - 3-16mm (1/8-5/8 Inch); Mount Thread: 1/2-20UNF Includes SDS-Plus bits, 1/4 inch hex shank lock key, 1/2 inch socket square female adapter, hex handle converter, and 2 pcs 16mm key wrenches; This converter tool easily transforms a power impact wrench into a drill or grinder in seconds Class 3-Jaw Design - Class 3-jaw design securely holds round-shank drill bits from 3mm to 16mm Durability - The chuck features high precision threading and a tightly tapered construction with rust-resistant coated body and sleeve with electrophoretic enameling coating. All extensions have rust-proof finishing for extended service life Note - This product cannot be used counterclockwise. It must be used with a hammer drill only; using it in other modes may cause chuck damage Color: As shown Material: Metal Package Contents: 1 set x drill chuck adapter Only the above package content is included; other products are not included Note: Light reflection and different displays may cause the color of the item in the image to differ slightly from the actual product. Measurement allowance is +/- 1-3 cm 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight variation; ensure you are comfortable with this before ordering 2. Due to lighting and monitor differences, images may not reflect the exact color of the item. Please confirm you accept this before placing your order