Surly Single Cassette Cog 3/32" Splined 15t

Surly Single Speed Cog designed for singlespeed drivetrains. Can be stacked and used with 9-speed shifters, though multi-gear use will result in slower, less crisp shifting compared to cogs designed for multi-gear systems. Fits Shimano freehub splines. Constructed from SCM 415 hardened chromoly steel for durability and reliability. Weighs 39g. Photo provided for color and material reference only.