ZTTO single speed 1x system Narrow Wide chaining 104 BCD ROUND 32T 34T 36T for MTB 11s 10s 9s 1*11 Crankset Chainwheel Ring ZTTO single speed 1x system Narrow Wide chaining 104 BCD ROUND 32T 34T 36T for MTB 11s 10s 9s 1*11 Crankset Chainwheel Ring. Sale price : $15.12 Category : Sports & Entertainment