Park Tool 789 Reamer: 55.95mm Bike Tool

Descriptions

Accessories and replacements parts for Park Tool head and steerer tube cutting tools.

Features

• Reams head tube I.D. to 55.95mm to accept "internal" headset cups with 55.99 - 56.04 O.D. (1-1/2" ZS standard)
• Used with the 690-XXL Facing Cutter and 750 Centering Cone Adaptor
• For upper and lower head tubes accepting the ZS56 or EC56 headsets