Model: External Threaded Hollow Bottom Bracket. Model: External Threaded Bearing Bottom Bracket. Material: Aluminum Alloy Body + Resin. Bearings: High-Quality Dual Bearings. Weight: Approx.
Hollowtech Threaded Bottom Bracket MTB Road Bike Crank BB Bearing 68-73mm
MEROCA Hollowtech Threaded Bottom Bracket MTB Road Bike Crank BB Bearing 68/73mm
Shimano DEORE BB-MT500/MT501 HollowTech II Threaded Bottom Bracket-68/73mm
