Angular-contact headset bearing featuring 440C stainless steel balls and races for superior corrosion protection.

Some bearings feature anti-corrosion Black oxide/Magnetite coated 52100 High-Carbon Chromium alloy races paired with grade 10 Balls. Black Oxide (BO) coating provides an extra level of corrosion resistance and extended worry-free performance.

When properly installed (red seal facing outward) and adjusted, Enduro Angular Contact bearings (ACB) engage all of the bearing's balls to spread the force over a larger surface area, minimizing wear and increasing bearing life.

Photos may not match actual bearing. Descriptions are as stated.