Two tough black poly fenders (mounting brackets and hardware sold separately). This set does two wheels (a single axle). Two sets are required for tandem axles. Fits trucks with 18" to 19.5" dual rear wheels. SEE DISCLAIMER BELOW. IMPORTANT. PLEASE READ: Please check measurements to make sure these fenders will fit your truck prior to purchase. See drawing. They fit most but may not fit all trucks with 18 to 19.5" tires. Pay particular attention to fender width. If you purchase the fenders and they do not fit you can return them for a refund, but we do not pay return shipping. Fenders are 19.5 inches wide. They measure 39.5 inches end to end.