Item # 789/ Tools / Frame & Fork
Reams head tube I.D. to 55.95mm to accept “internal” headset cups with 56.00–56.10mm O.D. (1-1/2 ZS standard). Used with #690-XXL Facing Cutter and #750 Centering Cone Adaptor. Designed for use with the HTR-1 or HTR-1B Headtube Reamer and Facer.
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