NITRIP 12-Speed Bicycle Freewheel - Durable Hollow-Out Design High-Strength Steel Bike Flywheel for Road & Mountain Bikes | Perfect for Gear Shifting, Cycling Performance & Long-Distance Riding

Feature:1. Hollow out design, reduce weight, no additional burden on the bicycle.2. Made of quality high strength steel material, hardening technology, greater resistance, durability and extreme abrasion resistance.3. The unique design of mountain bike gear sprocket, can well control the shifting function.4. The strong oxidation resistance makes it difficult to oxidize and has a long shelf life.5. Wonderful accessory for bike.Spec:Condition: 100% Brand NewItem Type: Bike FreewheelMaterial: High-strength steel (9-42T) and 7075 alloy (46T)Color: As picture shownWeight: Approx. 493gGear Ratio: 9-11-13-15-18-21-24-28-32-36-40-46TPackage List:1 xBike Freewheel

Made of quality high strength steel material, hardening technology, greater resistance, durability and extreme abrasion resistance.

The strong oxidation resistance makes it difficult to oxidize and has a long shelf life.

The unique design of mountain bike gear sprocket, can well control the shifting function.

Wonderful accessory for bike.

Hollow out design, reduce weight, no additional burden on the bicycle.