FSA, Orbit C-33, Headset, Carbon, 69g, (S.H.I.S : IS42/28.6 | IS47/33)

* 1-1/8"/1-1/4", 45°/45° ACB* Compatible with carbon or alloy head tubes* For tapered 47 mm/52 mm OD head tube* For 1-1/8" to 1-1/4" tapered fork* Carbon-fiber top cover* Upper: 1-1/8" angular contact bearing (yellow seal)* Lower: 1-1/4" angular contact bearing (black seal)* Stack height: 15.6 mm + 1 mm = 16.6 mm* Weight: 69 g