microSHIFT Marvo LT Front Derailleur - 8-Speed Double, 38t Max, High-Mount Band Clamp, Shimano CompatibleFeaturing full metal construction and precisely engineered linkages, Marvo level derailleurs deliver high end performance that will last. Full aluminum construction Dual pull design 34. 9mm band clamp with included adapter for 31. 8mm posts Product Specifics Double or Triple: Double Drivetrain Speeds: 8 Front Derailleur Clamp: 31. 8 (1 1 4") Front Derailleur Clamp: 34. 9 (1 3 8") Front Derailleur Cable Pull: Dual Front Der Shifter Compatibility: