Origine's tapered Inset 1''1/8-1.5'' headset has been specifically designed for cyclists seeking precision steering and performance. -Top cap machined from a single alloy block with an O-ring and gasket for a maximum protection and seal. -Sealed premium quality bearings for friction-free smooth operation. Requires little turning effort, friction-free. Assembled in a controlled environment. It's the small details that count. Compatible with all the following frames: Axxome II 250 / Axxome II 350 / Axxome II RS / Axxome GT / Axxome GTR / Tuxedo 3 / Axxome GT Ultra / Axxome GT32 / Trail / Graxx / Graxx II