Klein Tools 65129 2-in-1 Hex Head Nut Driver with SlideDrive

The Klein Tools 65129 2-in-1 Hex Head Nut Driver with SlideDrive is unique with a patented tip that slides back and forth between 1/4in and 5/16in hex sizes. By twisting the thumb nut, you can lock the tip securely into its setting. There is a magnet in the Hex Head that keeps each screw in place, no matter which driver you use!  For comfort and added torque, there is a cushion-grip handle that makes long days a breeze! Features Unique, patented tip switches from 1/4-Inch size to 5/16-Inch size Magnetic tip used for all drivers Twist the thumb nut to lock tip setting Cushion-Grip handle for added torque and comfort U.S. Patent 7,654,175 B2 Specifications Type: Hex Driver Application: HVAC Special Features: Slide Drive™ Tip Size: 1/4", 5/16" Magnetic: Yes Shank Length: 6" (15.2 cm) Insulated: No Handle Type: Cushion-Grip Handle Length: 4.313" (109.6 mm) Overall Length: 10.25" (26 cm) Weight: 0.50 lb (0.23 kg)