ITEM NAME:2pcs 1/2 inch Drill Chuck Adaptor for Impact Wrench Conversion-No Screw, Description: 1/2 inch 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 no 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 Adaptor 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.