Park Tool Taps cut easily and fit conventional tap handles. Clean out or restore damaged threads in crank arms with the Park Tool TAP-6 Pedal Tap Set Taps can be used with either steel or alloy crank arms Set includes both right and left-hand threads Made of high carbon steel, precision ground, and hardened to stay sharp Fits all conventional tap handles Includes a set of 2 taps, 9/16" x 20 TPI