Park Tool Facing Pilot

Park Tool has long provided some of the best cutting and machining tools in the bicycle industry. Their centering pilots demonstrate their commitment to maintaining this high level of quality. Please read below for use and compatibility information specific to each size pilot: - 49.8mm (for 1.5-inch standard): The 767 is used with the HTR-1 (HTR-1B) and 690XL facer to perform facing only. It fits head tubes with an inside diameter of 49.8mm (1.5" standard). - 43.8mm (for ZS44 and EC44): The 768 Pilot is used with the HTR-1 (HTR-1B), the 750 Centering Cone Adaptor and 690XL facer to perform facing only. It fits head tubes designed for low profile or, "zero-stack," headsets. These head tubes have nominal inside diameters of 43.9mm. - 55.9mm (for internal 1.5-inch ZS): The 790 Pilot takes the place of the 789 Reamer when performing head tube facing only. The 790 is used with the HTR-1 Headtube Reamer, the 690-XXL Facing Cutter, and the 750.2 Centering Cone Adaptor. The tool allows facing head tubes with 55.95 - 55.90mm I.D. ("Internal" 1-1/2" ZS standard).