Park Tool TAP-10 Frame Tap If you've stripped a derailleur hanger, you know what a headache it can be. With the Park Tool Frame Tap, this disaster is reduced to a simple non-issue. Pick one up and tap your threads with ease. Made of high carbon steel, precision ground, and hardened to stay sharp, they cut easily and fit all conventional tap handles. Features 10x1mm thread for derailleur hangers High carbon steel, precision ground, and hardened to stay sharp Fits all conventional tap handles Related Articles: Cutter Selection Guide for Reaming, Tapping, and Facing Basic Thread Concepts Manufacturer's Part No: TAP-10 UPC: 763477007650 | Park Tool Tap Frame Taps 10mm X 1mm Tap-10 Derailleur Hangers