The 750.2 Centring cone adapter increases the size of the centering cone of the HTR-1 Head tube Reaming and Facing Set
Fits headtubes with an inside diameter of 38-60mm
Several headset standards use large head tube inside diameters
The 750.2 will allow the HTR-1 to be used with the IS (intergrated headset cups) and the OnePointFive (1.5"") headset standard
The HTR-1 must have the correct cutting tool and pilot for the corresponding standard