The 750 Centering Cone Adaptor increase the size of the centering cone of the HTR-1 Headtube Reaming and Facing Set. Several headset standards use large headtube inside diameters. The 750 will allow use the HTR-1 with the IS "integrated without cups", the "low profile with cups" and the OnePointFive (1.5") EC headset standard. The HTR-1 must have the correct cutting tool and pilot for the corresponding standard.
