6-Point Design the special design help the socket become more compact and stable, it drive nuts very firmly. | 1/2 inch Drive all impact sockets are in 1/2 inch drive head, you can use these hex drive tool on most impact guns,hand drills, electric drills, wrenches | 1/4 inch Hex Shank bit The bit adpater helps you to conect the 1/2 '' drive deep sockets to normal 1/4 inch Hex Shank electric drills, more convenient for use on maintenance. |