PARK TOOL 789 Milling attachment

Park Tool 789 55.95 Reamer

Ream the head tube I.D. to 55.95mm to accommodate "internal" headset cups with 56.00-56.10mm outside diameter (1-1/2 ZS standard). Used with #690-XXL face mill and #750 centre taper adapter. For use with the HTR-1 or HTR-1B head tube cutter and face mill.

FEATURES:

• SHIS terminology: the 789 is used for upper and lower head tubes to accommodate the ZS56 or EC56 headset.