Cinema VR Rear Hub Guard type: slide-on rear non-drive side (NDS) / drive side (DS) hubguard material: nylon diameter inner hole: 14mm thickness: 5,5mm outer diameter: 76,5mm how to install: slide on axle between frame and peg additional information: fits on most rear hubs VR (uniVersal Rear) hub guard is injection molded from an ultra-durable and fast sliding nylon composite