KMC's latest breakthrough in rust protection. EcoProteQ treatment doubles the rust resistance compared to the RustBuster treatment. 
The benefits of the smoother coating are less noise, great performance, maximum rust resistance and a great look, Double X Durability, KMC guarantees your satisfaction!

1/2" X 11/128" 
pin length 5,88 mm
Compatible with all 10-speed Road and MTB drive train systems
Hi-Performance
Extremely durable
NON-directional design
EcoProTeQ Anti-Rust technology
Extra Stretchproof treatment