KMC XGlide EPT Chain - 9/10/11-Speed 126L Optimized Shimano CUES Drivetrain GrayKMC XGlide EPT Chain 9 10 11 Speed 126L Optimized for Shimano CUES Drivetrain Gray. KMC Xglide EPT chains offer smooth and decisive shifting with its special plate design for wider cog teeth to enable instant shifts and efficient gear harmonization. The EcoProTeQ weatherproofing surpasses a 650 hour salt spray test to offer outstanding anti rust defense for worry free operation and low maintenance. Optimized for use with Shimano CUES 9 to 11 Speed