10-Speed Freewheel Bolany Mountain Bike 10-Speed Bicycle Freewheel 11-42T Cassette Flywheel Replacement

Specifications:
Item Type: Cassette Flywheel
Material: Chromium‑Molybdenum Steel
Color: Silver+Black
Weight: Approx. 556.0g / 19.6oz
Quantity: 1pcs
Specifications: 10 Speed, 11-42T
Small Gear: 11T
Number of Teeth: 11-13-15-18-21-24-28-32 -36-42T
Large gear: 42T
Wide gear ratio mountain bike flywheel, large gear ratio flywheel, for single-plate chainring, climbing is more labor-saving