Bike 5 Speed Cassette 11-13-15-18-21T Bicycle Freewheel
【Gear Ratio】: This Bike 5 Speed Cassette is designed for for 11-13-15-18-21T. 1 Set Bike 5 Speed Cassette. 【Features】: The gear plate features a hollow design to reduce weight, enhancing the performance and efficiency of your ride.