Specifications: Spring loaded ball bearing on head holds sockets securely. Suitable for quick change 1/4" chuck systems or directly into drill chuck. Change your hand socket set into a driven socket set. Perfect for your impact driver or drill. Allows you to replace your ratchet with a power tool. These impact ready adapters are rated for the most demanding of applications. The 1/4" hex shank fits all quick change chucks as well as standard drill chucks. Socket bit adapter drill nut driver power extension bar 1/4", 3/8", 1/2". Type: Drill Bits Bar Quantity: 3 Pcs/1 Set Material: Chrome Vanadium Steel Size Details: 1/4" Hex Shank to 1/4" 6.35mm Square Head Socket Length: 65mm/2.56" (Approx.) 1/4" Hex Shank to 3/8" 9.4mm Square Head Socket Length: 65mm/2.56" (Approx.) 1/4" Hex Shank to 1/2" 12.6mm Square Head Socket Length: 72mm/2.83" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 3 x Socket Adapter Hex Shank Drill Bits Rod Bars