NOTE: "Only one bolt is included for the 14T jockey wheel due to the larger centre hole size, the lower jockey wheel uses the pre-existing bolt of the jockey wheels you're replacing"Key Features:Upper 12T Jockey wheelLower 14T Jockey WheelSuitable for Sram rear mechs usings 12 and 14T jockey wheelsStainless steel cartridge bearings with low friction seals for reduced dragCNC machined from 2014 T6 aluminiumLabyrinth style spacers encapsulating / protecting the bearings, increasing product life and reducing maintenanceLightweight yet robust designAvailable in our 6 standard colours