Enduro HDK-0007 External Bearing Kit - EC34/28.6 Upper | EC34/30 Lower, Angular Contact Bearings, Straight, Black Oxide Black EA Headsets

Bearings feature anti-corrosion Black Oxide/Magnetite treated 52100 High-Carbon Chromium alloy races paired with large grade 10 Balls Dual-lip labyrinth (LLB) seals ride in a micro-groove for ultimate protection against sweat and the elements Contain the 90% fill Mobil XHP 222 high pressure water proof synthetic grease, so you never have to guess if there is grease inside Black Oxide treatment provides an extra level of corrosion resistance and extended worry-free performance Enduro Angular contact bearings are designed so that the balls are engaged to spread the force over a larger surface area for minimizing wear