Description:Brand New and High Quality.Compact and easy to carry.Made of super strong heat treated chrome vanadium steel.Stainless steel locking ball ensures secure fit, won't slip off.Prevents stripping during high speed drill operation.Applies to the screwdriver handle or electric screwdriver tools (eg. hexagonal hole or three jaw chuck ).Can be used to install the sleeve , a good convert accessories.Model Number: Socket Adapter Hex Shank SetMaterial: Stainless steelProduct Size:3/8 3/8 "(10mm) 1/4 "(6.3mm) 65mm1/4 1/4 "(6.3mm) 1/4 "(6.3mm) 65mmcolor:silverPlease let us know the size when you place an order(1/4" or 3/8")Note:1.Please allow 1-3mm errors due to manual measurement.2.Due to the difference between different monitors,there are color differences,pls take the real product as the standard Package Includes:4x Socket Adapter Drill BIts Set Hex Shank 1/4" or 3/8" Impact Driver Tools