Sram pc 1051 bicycle chain 10 speed the sram pc 1051 is a newly developed innovative bike chain featuring the powerlock connecting link the 1051 offers a sturdy build and smooth changeover this chain is built to promote efficient power transfer so you dont have to worry about losing any performance power th key features 10 speed chain powerlock connector included solid chrome hardened pins weight 271g for 114 links manufacturer claimed also shimano compatible