FJQXZ Bike Bicycle Fender Set with Taillight Broader for Mountain Bike Bicycle Front Rear Mudguard (Yellow) The bike fender set with broader fenders and taillight provide more protection for rainy day and night The fenders are made of high elasticity material, can be twisted freely, not easily broken, quite strong, extremely durable The fender set is compatible with mountain bikes with standard front forks including reverse opening designs. Quickly and easily install (Rear fender angle is adjustable) The front fender with 3 sizes expandable nuts, fits the front fork reserve opening diameter of 0.87"(2.2cm) to 1.08"(2.75cm); The rear fender with quick release mounting design, fits the seat tube circumference dimension from 3.5"(8.9cm) to 3.7"(9.4cm) Front Fender Arc Length * Width = 22.8" * 4.5"; Rear Fender Arc Length * Width = 21.9" * 4.9"