SRAM Apex Flattop Chain - 12-Speed, 120 Links, Gray, D1Flattop technology is so much more than a distinctive look. It allows SRAM's 12 speed chain to be lighter, stronger and more durable than anything that came before. The Apex chain uses the same construction as the Rival and Force chains, with a polished gray finish. Optimized for use with SRAM's Apex 12 Speed drivetrain Flattop technology allows for a narrower chain with quieter operation and increased strength and durability Includes Flattop