ITEM NAME:2 Pack 1/2 Inch Shank Electric Drill Chuck Adapter for Impact Wrench Conversion, Description: 1/2inch Drill Chuck Adaptor For Impact Wrench Conversion Tools High strength and hardness. Industrial Quality Easy to use. Material: Stainless Steel Specification: Color: Grey Type: 1/2inch Drill Chuck Adaptor with screw. Size: approx. Screw Diameter: 12.5mm/ 1/2inch with screw: 45mm/1.77inch no screw:35mm/1.38inch Package Includes: 2 Pieces 1/2inch Drill Chuck Adaptors Note: Please allow 1-3mm error due to manual measurement..Color: Grey. Easy to use. Due to the difference between different monitors, the picture may not reflect the actual color of the item.