Brand Name: Craftsman
*Sub Brand: Speed-Lok
*Drive Type: Ball Hex
*Size: 1/4 and 3/8
*Length: 2 in.
*Product Type: Screwdriver Socket Adapter
*Material: Carbide
*Number in Package: 2 pc.
*Impact Rated: No
*Magnetic: No
*Shank Diameter: 1/4 in.
*Packaging Type: Carded
*Shank Type: Hex Shank
*Allows user to use 1/4"""" and              3/8"""" drive sockets in drill for quick drilling of screws              and bolts