An $8 plastic 5-gallon barrel makes TWO fenders and a great garbage can. Here's a fender from a 23-inch diameter barrel, notched a bit to fit over the tire. The bolts are 2 inches long and have fender washers (what else?) outside and regular washers inside. Fenders were cut with a saber saw and snoothed out with a propane torch. They look great! (Cat added for human interest.)