Hollow Pin technology reduces weight without compromising chain strength PowerLock allows tool-free chain connection (one-time-use only). More heavily chamfered plates for smoother shifting and a quieter ride New inner plate finish and chrome-hardened pin construction for increased chain lifeSRAM PC 1091R HollowPin Chain Features: Ten-speed 114-link chain designed for lightweight strength and smooth, quiet operationChrome hardened, HollowPin construction for lightweight durabilityHeavily chamfered outer plates for improved shifting and quieter operationTool-free installation with PowerLock chain connectionsWeight: 255 grams; two-year limited warranty