Sram pc 991 bicycle chain 9 speed this state of the art sram 9 speed chain comes with power link technology and is guaranteed to enhance your ride the sram brand is well respected worldwide in the cycling community and this chain is no exception to its high status reputation th key features chrome hardened with nickel plated external pin plate and nickel plated internal pin plate compatible with shimano 9 speed drivetrains 114 links weight 297g manufacturer claimed