1.1/8, 36x45 ACB;For 50mm OD headtube;1.1/8 steerer

• FSA Orbit ZS-3 Semi-Integrated Headset - Black, 1.1/8-Inch/8 mm
• 1.1/8-Inch/8 mm Inch
• Black

FSA Orbit ZS-3 Semi-Integrated Headset - Black, 1.1/8-Inch/8 mmFSA