FSA

SHIS: ZS49/28.6 | ZS49/30 Fits headtube ID: 49.6mm (Upper and Lower) 1-1/8" bearings: 36°/ 45° ACB (Angular Contact Bearing) CNC machined alloy cups (1.5" reducing to 1-1/8") For straight 1-1/8" steerer  10.6mm total stack height 139g