Park Tool 790, Facing Pilot, For Htr-1, 55.9Mm (S.H.I.S. Zs56, Ec56) aid Square taper interface

Square taper interface

and allows us to deliver superior ventilation throughout the helmet

and most factory oval cross rails

When you need to get the job done

we were pretty excited

Park Tool 790, Facing Pilot, For Htr-1, 55.9Mm (S.H.I.S. Zs56, Ec56) aid Square taper interfaceInformation: 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: 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