Cult Nylon Freecoaster Hub Guard type: slide-on rear non drive side (NDS) material: 6061-t6 aluminum core | nylon / polymer sleeve diameter inner hole: 29mm thickness: 5mm | reach 22mm outer diameter: 76mm how to install: slide over cone nut, between hub and frame additional information: designed to slide over the cone nuts of your cult hub compatible with the Cult Match Freecoaster hubs