FSA Orbit X 1" Threadless Headset The FSA Orbit X threadless headset is constructed of aluminum and features sealed cartridge bearings. Features Classic shape with modern styling for high-end road bikes For threadless steerers Forged and CNC machined 6061/T6 aluminum cups Patented alignment tip for increased durability and performance TH brand 36 degree Micro Angular Contact Bearings (red seal)Laser etched aluminum top cap26. 4 or 30. 0mm diameter crown race7075 alloy crown race1"Stack Height 18. 4+13=31. 4mm Black or Silver anodized finish Specifications Item Specifications Crown Race30. 0Stack Height31. 5 mm Bearing Type Cartridge Headset Type1" Standard Cups Weight82 g Material Aluminum Steerer Tube1" Threadless | Fsa | Orbit X 1" Threadless Headset | Black | 1"