Meroca Mountain Bike Bottom Axle One Hollow Bb Bicycle Screw-In Bottom(Black)

1. Material: aluminum alloy
2. Bearing: steel bearing
3. Weight: about 115 grams
4. Inner diameter: 24 mm
5. Applicable frame bottom bracket: 68-73mm
6. Application: suitable for SHIMANO series
7. Features: beautiful and practical, simple and convenient to install, solid material, not easy to deform, durable