4 Bolt Configuration Aluminum Alloy Chainrings for Road Cycling Enthusiasts
Narrow wide tooth chainring, less chance of dropping the chain. The chainring is made of CNC aluminum alloy material. Material: Aluminum alloy. 4 bolt, 110BCD, support 9, 10, 11 speeds. 5 types for you to choose, 48T, 50T, 52T, 54T, 56T.