Wolf Tooth Premium Headset - EC44/40 Lower Blue MFPN=W0F1900OHDRSA21555 48/31 Number of Chainrings Double

48/31 Number of Chainrings Double Drivetrain Speeds 9 Chainring BCD 80 Color Black Crank Length (mm) 165

or a GoPro

Return spring and reach adjustment

Control knob to regulates CO2 flow

Wolf Tooth Premium Headset - EC44/40 Lower Blue MFPN=W0F1900OHDRSA21555 48/31 Number of Chainrings DoubleWolf 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. A pair of dual lip seals ride in micro grooves to keep out water and debris. Stainless Steel Bearings provide unparalleled corrosion resistance Highly recommended if your headset will be exposed to wet conditions or sweat