Alomejor Bike Bottom Bracket BB Thread Type Crankset Bearings Compatible with /PF30 68/73/86mm Bicycle(Black)

STURDY AND This bike bottom bracket is made of quality alloy material, corrosion resistance, sturdy and EXTREMELY LOW FRICTION: The bicycle frame bottom bracket with extremely low friction, good performance, long service time. THREADED TYPE: This mountain bike bottom bracket with special design of threaded bottom bracket, be sure to avoid any squeaking. DIRECTLY REPLACE OLD: This bb thread type bottom bracket with professional manufacturing, directly replace your old or broken one. 2 DIFFERENT COLORS: This bb crankset bearings with 2 different colors for you to choose, meet your different needs.