The SRAM PC 1031 is a strong, lightweight, narrow 10 speed chain with a PowerLock connecting link, allowing for tool-less fitting Key Features: • Hollow Pin construction provides precise, smooth shifting of gears and saves on weight without sacrificing the strength of the chain. • The Power Lock connector link allows for tool-less attachment. • Compatible with industry standard 10 speed systems. • 114 links. • Pin Treatment: Chrome-hardened pins. • Size: 1/2" x 11/128".