Enhance toughness, no damage Fork installed at the bottom of caliber 17-25.4mm, rear sit bar mounting Length 23/32cm Rear universal clip-on bracket Height and angle adjustable Lengthen Bicycle Fender Set(52.1cm-65.7cm) The rear guard is seat post or rear frame spar mounted depending on your frame design and suits bikes with or without rear suspension. These snap-on fenders offer optimized dirt protection and are also suitable for suspension forks.