Klein Tools Nut Driver 7-In-1. All sizes allow for easy one-handed driving. The sizes are interchangeable ensuring you have the size you need when you need it. Specifications for Klein Tools 7-In-1 Nut Driver: Manufacturer: Klein Tools Color: Black Features of Klein Tools 7-In-1 Nut Driver This Klein Screwdriver / Nut Driver allows for one-handed driving with seven sizes in one tool. Strong Rare-Earth magnets (1/4in 5/16in 11/32in 3/8in 1/2in) securely hold nuts and bolts. Spring coil (7/16in 9/16in) holds nuts and bolts in place without the use of magnets. Hollow shafts (1/4in 5/16in 3/8in 7/16in 9/16in) for driving nuts deep onto bolts or threaded rod. Heavy-duty handle and shaft exceed the torque performance of regular nut drivers. Wrench-assist on handle for added torque on tough jobs. Color-coded bands for easy identification. Package Contents: Klein Tools 7-In-1 Nut Driver Handle Assorted Color Coded Bits Klein Tools 32807MAG: Nut Driver 7-In-1