ORIGIN8

 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 20T x 3/32` Silver

 Threaded, hardened chromoly design Ultra strong Coated to withstand rusting 1.37` x 24 tpi 20T x 1/8` Silver

 Threaded, hardened chromoly design Ultra strong Coated to withstand rusting 1.37` x 24 tpi 20T x 3/32` Silver

 Dual purpose single speed cassette cog or 6-bolt disc fixed cog Compatible with Shimano cassette bodies and 6-bolt disc rotor mounts Great fixed gear conversion for 6-bolt disc hubs CNC machined AL6061 Zero-Flex base 3/32` forged CroMo cog 20T x 3/32`