Surly Single Cassette Cog 3/32" Splined 16t Model=FR 571 Rim which allows them to be

which allows them to be run on legacy cranks (TRS/LG1/XCX)

36h RIMS SALT "VALON" rim

6 upper/lower upper stack 11mm color purple weight 36g

synthetic oil-based lubricant for cycling-specific applications

Surly Single Cassette Cog 3/32" Splined 16t Model=FR 571 Rim which allows them to beSurly 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 16 Cassette Body Type Shimano HG 7 Speed Drivetrain Speeds Single Speed 3 32" Material Steel