Your typical ratcheting screwdriver lets you twist the handle in both directions, but only drive a screw when turning clockwise. With the Kobalt Double Drive, holding the ratcheted collar lets you drive a screw no matter how you twist the handle.

A gearing mechanism hidden beneath the collar is where all of the magic happens, and by magic I of course mean clever engineering. When you're not holding the collar the Double Drive functions as a regular ratcheting driver, while a simple switch lets it operate in both directions for quickly removing a screw too.

Since Kobalt is a Lowe's brand, the screwdriver is available exclusively at its stores for just $20. [Kobalt via The Green Head]