Columbus IS headset

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This Columbus headset features integrated bearings that fit directly into the 1 1/8" head tube of any frame using Camapagnolo-style cartridge bearings and a aluminum gap cap. Examp les: pre-2015 Cinelli Vigorelli, MASH Histogram & MASH Bolt, Breakbrake17 Transfer, pre-2020 Affinity Kissena. ⓘ Integrated bearings fit directly into compatible head tubes without the need of a bearing press. Specifications • 1 1/8" integrated • 45°/ 45º angular contact bearings (IS42-28.6/IS42-30) • hardened steel crown race • stack height:17mm • top cap & star nut/compression plug not included • weight: 86g Show more