As a tool category, nut drivers may not be burning with innovation, but Klein has set a new standard with some very cool features.

Perhaps the coolest and most innovative features of these new heavy-duty nut drivers is the hollow handle, which accommodates any length bold. Magnetic tips grip the nut firmly while driving, and the shaft has flat indentations to accept a wrench in case you need additional torque.

The drivers are available in six sizes: ¼-in, 5/16-in., 3/8-in., 7/16-in., ½-in. and 9/16-in., and 4-piece (approx. $55) and 6-piece sets (approx. $80). Individual drivers are color coded on the top of the handle and at the bottom of the shaft to indicate size. Individual drivers range in prices from approx. $13 - $20.

Check out the video below for a closer look.