Park Tool 769 head milling cutter extension

For use with the HTR-1 head tube reaming and facing set, the #769 extends the reaming depth of reamers used in 1", 1-1/8" and 1-1/4" head set standards to up to 27 mm from the head tube face. Designed for head tubes that use headsets with deep insertion cups (Chris King® SteelSet headsets and others).