3pcs Chrome Vanadium Steel Socket Adapter Wrench Hex Shank to 1/4" 3/8" 1/2" Extension Drill Bits Bar Hex Bit Set Power Tools This Hex shank turn square connector turns any power drill into a power nut driver sturdy spring-loaded ball bearing holds sockets securely in place, sockets Snap-on tightly and won't slip off. Hexagonal shank, general specifications edge 6.35mm 1/4. Suitable for a screwdriver handle or electric screwdriver tool drive sleeve e.   Features: Hex shank turn square connector, length 50mm, turn 1/2"(12.5mm), 3/8" (10mm), 1/4" (6.3mm) connector. Made from chrome vanadium steel, suitable for heavy duty impact drivers. Spring loaded ball bearing on head holds sockets securely. Suitable for 1/4" chuck systems or directly into drill chuck. Change your hand socket set into a driven socket set (HEX turn to square head). This set is perfect for your impact driver or drill, and allows you to replace your ratchet with a power tool. These impact ready adapters are rated for the most demanding of applications (2000 in/lb of ). The 1/4" hex shank fits all chucks as well as standard drill chucks. Hex shaft saves time changing out of power drill saves time over traditional hand operated nut drivers. Kit hardened & treated chrome-vanadium steel alloy for superior strength & durability prevents stripping during high speed drill operation. After install the hexagonal size can be converted to square head size, so use to install the sleeve.   Specifications: Material: CR-V Length: 50mm Size: 1/4” to 1/4” hex shank, 3/8” to 1/4” hex shank, 1/2” to 1/4” hex shank Package size: 10*7*1.5cm/3.93*2.75*0.59in Package weight: 70g   Note: Item color may show sight aberration due to different shooting light and monitor display.   Packing list: 1* 3pcs 50mm Socket Adapter