Origin8 Cog Ul8 F6B-Disc & Cassette 18Tx3/32 Black/

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