Made of high strength synthetic plastic, elastic and durable.This fender is of good quality,Works with most mountain bikes, tackles rain, rain relentless, and mud boards!.The rotating synthetic plastic knob allows you to adjust the angle between the fender and the wheel, without tools like a key,easy to use.By adjusting the position and tightening the screw, the height can be adjusted by itself..Front Rear Mudguard Fender Set,splash-proof, and worry-.Front fender Front width 7cm,Back width 4.5cm;Rear fender Front width 6.5cm,Back width 4cm,Various colors,This fender can be fitted with two different accessories..It is suitable for 2.5cm-3.3cm installation, and the two sections are connected, which can easily adjust the angle.Suitable for cars with mounting holes in the front, and the diameter of the seat tube is within 3.3cm. Complementary screws are provided..Suitable for all types of bicycles with a seat holder less than 33mm,such as mountain bikes, road bikes and other front hole bikes.applicable models: 20'' 22'' 24'' 26''.