Features: 1. Adapts sockets to power drills and drivers 2. Detent ball for secure socket retention so sockets snap on tightly and won't slip off 3. 1/4-inch hex shank prevents stripping during high speed drill operation 4. Super strong heat-treated chrome vanadium steel for normal and impact use 5. Sandblasted finish 6. Converts all power drills into speedy socket drivers 7. Use with a hand screwdriver handle or battery/power tool 8. Color coded for easy recognition Specification: Color: black Material: Chrome Vanadium Steel Size: 1/4 * 1/4 * 65mm length -- 1/4 " shank can be converted to 6.35mm square head 3/8 * 1/4 * 65mm length -- 1/4 " shank can be converted to 9mm square head 1/2 * 1/4 * 72mm length -- 1/4 " shank can be converted to 13mm square head Package Included: 1 x (1/4" hex shank to 1/4" socket)Socket Adapter 1 x (1/4" hex shank to 3/8" socket)Socket Adapter 1 x (1/4" hex shank to 1/2" socket)Socket Adapter