HUB Bearing Kit #84 3.5K, EZ Lube CAP. This bearing kit is designed for use with 3.5K hubs that take a 12mm x 28tpi axle. It includes everything you need to install bearings and races, including the HUB Bearing Press (sold separately), 12mm cone wrenches, bearings, and high-speed lube. The bearings are high quality and designed for long life. The lube is included to make installation easier. The kit also includes a cap to cover the unused grease fitting on the hub, keeping it clean and protected.