1. Design: Sealed cartridge bearings, fits 68 mm bottom bracket shell.
2. Square taper bottom bracket. Matte black finish.
3. Feature: It is a integrated sleeve and inside bearing to make sure the bearing rotate stably.
4. Waterproof, dust bearing and bearing shield design, which can help to prevent the erosion of sediment water.
5. Cartridge sealed bearing with steel sheath. High quality material, durable to use. Easy to install on the bike. It is suitable for most of mountain bikes.