Ritchey: The Ritchey Comp Cartridge Integrated IS headset lower features full complement stainless steel angular contact sealed cartridge bearings packed with Ritchey high-webbing grease. Material : alloy Stack height : zero Headtube ID : 42, 47, 52mm S.H.I.S .: IS42/30 (1 ?”), IS47/33 (1 ¼”), IS52/40 (1.5") IS42/30 (1?") bearing : 41.8/30.5/8mm 45°/45° - sealed cartridge (ACB) IS47/33 (1 ¼”) bearing : 41.8/34.1/8mm 45°/45° - sealed cartridge (ACB) IS52/40 (1.5") bearing : 51.9/40/8mm 45°/45° - sealed cartridge (ACB) Weight : 32g Colour : black
