Cranium Polished 1 Ita Threadless Headset

1" ita lightweight, high quality alloy sealed bearing threadless headset. Features:Lightweight aluminium cupsSealed cartridge 36/45 deg. Angular contact bearings.Secure fit to fork with split compression ring.Alloy top cap and std. Star-nut* includedCrown race: 26.4mmHeadtube id: 30.2mmFork steerer od: 25.4mmStack heights:Upper: 14.5mmLower: 11.8mmTotal: 26.3mmDo not use star-nut in conjunction with carbon steerer forks.