SRAM took the lightest and most durable chain they’ve ever made and made it lighter. With no compromises. Their HollowPin construction is lighter and stronger than a solid pin and cutouts in the outer and inner plates drop 13g from the previous generation. This results in a lighter faster stronger and more durable chain.Flattop technology enables a narrower chain with quieter operation and increased strength and durabilityHard Chrome plated inner link plates and rollers for reduced wear and prolonged lifeHollowPin construction for increased strength and efficiencySuper-light outer and inner plates with cut-out design13g lighter than previous RED chain Links 126 Drivetrain Speeds 13 Chain Connection Type Single Use Master Link Color Rainbow, Silver Half Link Chain No Defined Color Multi-Color, Silver keyword search AXS