Clean out or restore damaged threads in crank arms with Park Tool's Pedal Taps. These taps can be used with either steel or alloy crank arms. The set includes both right- and left-hand threads. The 1/2" size is common on "one-piece" cranks. - Includes a set of 2 taps, 1/2" x 20 tpi - Made of high carbon steel, precision ground, and hardened to stay sharp - Fits all conventional tap handles