The Cinema VF universal front hub guard is injection molded from an ultra-durable and fast sliding nylon composite. Designed to work with as many different front hub and fork combinations as possible, the VF guard protects the hub flange and spokes from grind damage. But unlike most guards, the VF installs on the outside of the dropout, so there's no hub hardware to replace and it doesn't have any effect on axle spacing. (0.9 oz) (3/8" axle)