The newest 1091R chain features more heavily chamfered outer plates for improved shifting and quieter running. Other advancements include a new inner plate finish plus chrome hardened pin construction, both for longer chain life.The HollowPin construction of SRAM\'s 10 speed PowerChain gives smooth, precise shifting and weight savings without sacrificing strength.Weight 255 Grams / 114 linksRecommended Group SRAM Red and industry standard 10 speed systemsChrome Hardened Pins.