Surly Single Cassette Cog 3/32" Splined 14t MFPN=E06SN21A0200SPK Model Elite Diameter 27

Model Elite Diameter 27

or just for pure security

Useful for measuring the wear of a cassette or single speed cog

A fully rechargeable pump that is ready to go in 30 minutes via Type-C connection

Surly Single Cassette Cog 3/32" Splined 14t MFPN=E06SN21A0200SPK Model Elite Diameter 27Surly Single Speed Cogs. Designed as a singlespeed cog but may also be stacked and used with 9 speed shifter. Multi gear use will result in slower less crisp shifting than cogs designed for multi gear systems Fit Shimano freehub splines SCM 415 hardened chromoly steel Photo for color and material reference only Tooth Count 14 Cassette Body Type Shimano HG 7 Speed Drivetrain Speeds Single Speed 3 32" Material Steel