SUMC chain link is manufacture with reliable coloured coating, provide strong corrosion resistant 
No tools is needed to remove the chain for installation or cleaning.
Suitable for 11 speed gear on Road, Mountain and Folding bicycles.
The oil slick coloured chain last longer with exclusive outer plate design allow smooth gear shift and improve power transfer. The mid-level EL-series chains are semi-hollow for lighter weight and excellent power transfer.