- Threaded steel cogs from Echo.
- Made from heat-treated steel for maximum durability.
- Wide base increases the thread contact area to reduce the likelihood of stripping.
- Standard 1.37" x 24tpi threads to fit all fixed rear hubs.
- Compatible with all 1/8" and 3/32" chains.
- 16t cog features holes drilled around the base to save weight.
Weight 12t: 22g
Weight 13t: 26g
Weight 14t: 30g
Weight 15t: 32g
Weight 16t: 37g
Base Width: 10mm