Shimano Bottom Bracket BBUN-300 Square Taper BSA 68mm 115mm Indoor Trainers Materials: 57% Merino Wool 40%

Materials: 57% Merino Wool 40% Nylon 3% Lycra® Spandex

the Flexi Locking mechanism will extend the aluminum shaft to roll with the punches

This vintage-inspired L1 Premium Goods jacquard pattern and pom will complete your look

Air Temp: 3C to -3 (38F to 26F)

BOOT FIT CONCEPT: Women's Sport

Shimano Bottom Bracket BBUN-300 Square Taper BSA 68mm 115mm Indoor Trainers Materials: 57% Merino Wool 40%Unfortunately, all your moving components will eventually wear out and will need to be replaced to keep your bike working properly. When it comes to bottom brackets, you'll want to make sure you get the right bottom bracket to fit your bike and crankset. The Shimano BB UN300 Bottom Bracket is an English threaded, squared taper JIS bottom bracket. It fits JIS square taper cranksets and has a hollow spindle. FEATURES Compatible with JIS square taper