CNC Mountain Bike Fenders MTB Mudguard,Road Bicycle Front and Rear Mud Guard fit 20", 26", 27.5", 29", Universal,P3, 2 pcs Installation advice: It is very necessary to tighten the clamps in two steps, first fix the position of the fender with the clamps, then slowly tighten them until the fender is perfectly fixed. Material: 0.75mm non-toxic po..