FSA Orbit C-33 For Differential OD Headtube Integrated Headset 1.1/8-1.25-Inch/9
Style: Orbit C-33 For Differential OD Headtube. For carbon fibre headtube. For differential head tube upper 1.1/8", Lower 1.1/4". 1.1/8" upper, 1.1/4" bottom, 45x45 ACB (for carbon fibre head tube). For carbon fibre head tube.