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 15Tx3/32` Silver

 Threaded, hardened chromoly design Ultra strong Coated to withstand rusting 1.37` x 24 tpi 15Tx1/8` Silver

 Threaded, hardened chromoly design Ultra strong Coated to withstand rusting 1.37` x 24 tpi 15Tx3/32` Silver