Park Tool Tap TAP-10 M10x1mm for Derailleur Hanger

Frame Taps will become a lifesaver at some time for virtually every mechanic. As with all Park Tool Taps, these are made of high carbon steel and are precision ground. Park Tool Frame Taps cut easily and fit conventional tap handles.
The TAP-10 is a 10 mm x 1 mm thread, the same thread for the derailleur hanger.