Description:Spring loaded ball bearing on head holds socket securely. This set of socket adapter can change your hand socket set into a driven socket set.These impact ready adapters are rated for the most demanding of applications (2000 in/lb of torque).Chrome vanadium steel is suitable for heavy duty impact drivers.There are 3 sizes of socket adapter hex shank.It is suitable for quick change 1/4" chuck systems or directly into drill chuck. This set is perfect for your impact driver or drill, and allows you to replace your ratchet with a power tool.Item Name: Socket Adapter Hex ShankMaterial:Chrome Vanadium SteelSize Details:1/4" x 1/4" x 50mm- 1/4 "shank can be converted into 6.35 mm square. 3/8" x 1/4" x 50mm- 1/4 "shank can be converted into 9.53 mm square. 1/2" x 1/4" x 50mm- 1/4 "shank can be converted into 12.7 mm square.Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 X Socket Adapter Hex Shank (3Pcs) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.