FSA Orbit IS Carbon 138 Tapered Headset 1-1/8” / 1-3/8”

Description • 8.7/9.7mm CF IS-2C-138 SIZES • 1-1/8” / 1-3/8” , 36°/ 45° ACB • For tapered 45mm / 52mm OD head tube • For 1-1/8” to 1-3/8” tapered fork • Carbon fiber top cover • Angular Contact Bearing (black seal) • Stack Height 16.1mm WEIGHT • 65.4 grams