The SRAM RED 22 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 11 speed chain gives smooth, precise shifting and weight savings without sacrificing strength.HollowPin technology equals strength, incredible shifting efficiency, and light weight,242 grams, 114 links (PC 1090R weigh 250g),PowerLock silver connector, easiest install in the world,PowerLube: high performance grease..