Splined, hardened chromoly construction Optimized for strength and durability Designed for Shimano/Sram style cassette bodies ZERO-FLEX taper base design Strongest single speed cog on the market 17T x 3/32` Silver
Threaded, hardened chromoly design Ultra strong Coated to withstand rusting 1.37` x 24 tpi 17T x 1/8` Silver
Threaded, hardened chromoly design Ultra strong Coated to withstand rusting 1.37` x 24 tpi 17T x 3/32` Silver