Steel Material: The bottom bracket with steel shell is solid and sturdy with a long service time, works excellent, the use
Sealed Bearing Design: Waterproof, dust bearing and none maintenance sealed cartridge bearing design, which can help to prevent the erosion of sediment water, dirt, mud.
Easy to Install: Two Bearings thread design to better connect with the arm of the bike. Help you fast and easy installation without adjustment.
Safety: Integrated structure has no abnormal noise, with no gaps to prevent the assembly stuck, for use. And bottom bracket system can frame, more power output, it's better than ordinary structure bottom bracket.