Product Detail 產品詳情 - Bicycle Cluster

Transmission Cassette Cassette Lock Ring

AR-HUB-2

Mr. Control (Fouriers)

For SHIMANO® hub. 11 speed change to 10 speed. SPEC: OD Ø38.8 H: 2mm #Spacer

https://www.mrcontrol-bike.com/product_d.php?lang=en&tb=1&id=691