Switch from a handle to a drill in a snap! Power drills make quick work of large fastening jobs but some times, you still need the finesse of a hand tool. Klein's Switch Drive Handle System allows you to easily alternate any accessory with a power groove between a power drill and hand tool minimizing the number of tools and saving space. The patented quick release mechanism in the handle secures any 1/4'' hex shaft to quickly convert an impact rated accessory to the most rugged, long lasting, powerful hand tool in your bag.