Park Tool’s 750.2 Centering Cone Adaptor increases the size of the centering cone of the HTR-1 and HTR-1B Headtube Reaming and Facing Sets. The 750.2 will allow you to use the HTR-1(B) to ream and face head tubes designed to accept IS, ZS, and 1.5-inch EC headset standards.

Before reaming or facing, make sure you have the correct cutting tool and pilot for the headset standard(s) you are using. Please refer to our product pages for cutters and pilots for this detailed compatibility information.