We produce a set of angular contact ball bearings A/C specifically for hubs. In a standard radial cartridge bearing, only 3 or 4 balls are in contact with the race when the bearing is loaded. In an angular contact ball bearing, all balls are in contact, distributing forces over a larger area to reduce friction and minimize wear. The game can be adjusted to get a more stable wheel and facilitate the adjustment of the disc brakes while the wheel can rotate ly. Dimensions: 30 x 42 x 7 - SC: 747