With heavily chamfered outer plates for better shifting and quieter running the sram pc 1091 powerchain 10 speed boasts a lightweight construction without compromising on strength boasting chrome hardened pins for a longer chain life it also has a powerlock connecting link meaning no tools are required to install the chain lm features sram pc 1091 powerchain 10 speed heavily chamfered outer plates for butter shifting and quieter running chrome hardened pins for a longer cha