Connex S0 chains are made of high strength alloy steel. Their chamfered plate design offer precise, lightning-fast shifting, ideal for both road and MTB riding. - Alloy steel inner and outer link plates - Compatible with Shimano, SRAM and Campagnolo 10 speed drive trains - 5.9mm pin width - Reusable Connex master link included Connex sX chains are nickel plated for durability. Their chamfered plate design offer precise, lightning-fast shifting, ideal for both road and MTB riding. - Stainless steel inner links, alloy steel outer links, both electroless nickel-plated - Compatible with Shimano, SRAM and Campagnolo 10 speed drive trains - 5.9mm pin width - Reusable Connex master link included