Klein Tools’ Switch Drive Handle System allows users to switch between a power drill and hand tool. The patented quick release mechanism in the handle secures any accessory with a 1/4” hex. Available in two models, the Power Driver Set features the Switch Drive handle plus No. 2 Phillips and No. 2 Square 6” (152 mm) power blades. The Power Nut Driver Set (pictured) includes the handle and three 2” (51 mm) magnetic power nut drivers (1/4”, 5/16” and 3/8”).  PM1014_Products_hand-tools_KleinTools_SwitchDrivePowerNutDrivers_300.jpg