KMC X9EPT Eco Proteq 9-SPEED Chain KMC chains are known for their extremely durable and high quality chains that go on all types of bikes, from mountain, road and even track bikes. The KMC X9EPT Eco Proteq 9-SPEED Chain is no exception to the expectations of what KMC has to offer. The double X bridge shape and inner plate chamfering offer some extra smooth and fast shifting. The KMC X9EPT Eco Proteq 9-SPEED Chain is stretch proof, so it's guaranteed to last. KMC X9EPT Eco Proteq 9-SPEED Chain Features Eco Pro Te Q treatment doubles the rust resistance compared to KMC's Rust Buster treatment. Double X bridge shape and inner plate chamferring for smooth and fast shifting Stretch proof KMC X9EPT Eco Proteq 9-SPEED Chain Specifications Chain Connection Type: Reusable Master Link Defined Color: Gray Drivetrain Speeds: 9 Half Link Chain: No Links (links): 116 Weight: 325 g Width: 6. 6 mm | Kmc | X9Ept Eco Proteq 9-Speed Chain | Grey | 9 Speed