The 160R, 161R and 162R Reversible Tap Wrenches feature a fine-tooth ratcheting mechanism which adjusts on the fly for right- and left-hand use. In addition, the ratchet can be locked to transform the tool into a standard tap wrench. The self-centering, hardened-steel jaws assure the formation of straight threads in your work piece. Although designed mainly for holding taps, the Reversible Tap Wrench also works great with reamers, drill bits, screw extractors and other hand-turned tools.