Klein Tools 65131 2-In-1 Nut Driver, Hex Head Slide Drive, 1-1/2-Inch

Unique, patented tip slides back and forth from 1/4-Inch and 5/16-Inch hex sizes. A simple twist of the thumb nut locks in the tip setting. Magnet in hex keeps screw in place regardless of which driver is selected. Classic Cushion-Grip handle for added torque and comfort. Unique, patented tip slides back and forth to switch from a 1/4-Inch to a 5/16-Inch driver Twist the thumb nut to lock tip setting Magnetic regardless of which driver is selected Cushion-grip handle for added torque and comfort U.S. patent 7,654,175 B2 Additional Information Type:Hex Driver Application:HVAC Special Features:Slide Drive Tip Size:1/4"", 5/16"" Shank Length:1.5"" (3.8 cm) Handle Type:Cushion-Grip Handle Length:1.85"" (47 mm) Overall Length:3.359"" (8.5 cm) Weight:0.18 lb (0.08 kg)