FSA Orbit 1.5E ZS Internal Headset - 2051A, 5.3/12.8mm, Black, No.57E

Comp Logic headset features a smaller upper bearing to save weight.

Wolf Tooth Performance Headsets are machined out of aircraft grade aluminum and assembled with Black Oxide Cartridge Bearings, balancing quality and price.

Wolf Tooth Premium headsets are machined out of aircraft grade aluminum and feature high-end bearings made by Enduro. They are engineered to use the largest possible ball size and are filled with high-pressure waterproof lubricant.

Wolf Tooth Performance Headsets are machined out of aircraft grade aluminum and assembled with Black Oxide Cartridge Bearings, balancing quality and price.