Tapered sealed AC bearing headset, 1 1/8th – 1.5 inch. Designed for integrated headset frames (bearings sit directly in frame) 1 1/8th inch top and 1.5 inch bottom bearings. STAY STRONG RACE DVSN branding on top cap and included preload bolt cap. 1 1/8th reducer bottom crown race included for rider wishing to run ‘standard’ 1 18th inch steerer tube forks in their tapered head tube frames.