SRAM continues to innovate the chains that continue to win races around the world. The new PC 1051 10-speed PowerChain(TM) featuring the PowerLockA(R) connecting link provides smooth, precise shifting and weight savings. Compatibility extends to industry standard 10-speed systems. SPECS SPECIFICATIONS FOR PC-1051 CHAIN TECHNOLOGY HIGHLIGHTS: PowerLockA(R) COMPATIBLE GEARS: 10 MODEL: PC 1051 CLOSING LINK: PowerLockA(R) OUTER PLATE: Nickel INNER PLATE: Nickel PIN TREATMENT: Chrome-hardened pins WEIGHT: 277g / 114 links RECOMMENDED GROUP: SRAM RivalA(R), SRAM ApexA(R) and industry standard 10-speed systems