FSA Orbit MX threadless headset features TH brand 36 degree angular contact sealed bearings.

Forged and CNC machined 6061/T6 aluminum cups Patented alignment tip for increased durability and performance TH Brand 36 degree Angular Contact sealed bearings 7075 alloy crown race Laser etched aluminum top cap EC34/28.6 (36x36) | EC34/30 (36x36) Manufacturer Part Number: 101-0505 UPC: 400310025340 Box 7