Machined (not stamped) steel track cogs, compatible with English/ISO Standard 1.37" x 24 tpi hubs. For use with 3/32" chains (can also use with 1/8"). The threading is precise to prevent any possible damage to the alloy hub threads. Available in 13T-19T sizes.
Lock ring included. Machined steel, with precision threading. Universal fit for all English/ISO Standard 1.29" x 24 tpi track hubs.