Fangrui Product Details Material: Drill Chuck Converter Made Of High Density Material With Good Durability And High Impact Resistance, Easy To Use Adjustable: 1/2inch Square Or 1/4inch Hexagonal Fast Load Adapter And Can Be Used With Power Tools Innovation: Extended Post For Easy Of The Bit And Sleeve, Stable Clamping For Easy Operation Advantages: Hex Shank Socket Adapter One-hand Exchange Is Allowed During Operation And The Adapter Securely Holds Any 1/4inch Hex Handle To Use: Convert The Air Or Power Impact Wrench Into A Drill Or Ratchet Wrench Into The Drive Type: 1/2-inch Drive To 1/4-inch Hex Suitable Bit: 1/4 Inch Hex Shank Colour:black Material:steel Size:length: 50mm, Rear Diameter: 12.5mm, Front Diameter: 6.35mm Package Contents: 4 X Hex Shank Converter Only The Above Package Content, Other Products Are Not Included. Note: Light Shooting And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measurement Allowed Error Is +/- 1-3cm.