The Peterbilt 24" x 30" Heavy Duty Rubber Semi Truck Mud Flaps 3050MF-FG come in a set of two pieces designed for the rear left and right placement on a vehicle. They are black in color and made of durable rubber material with a bolt-on attachment type for direct replacement. The fender flaps have a universal fitment and include bolts for installation. These mud flaps are manufactured by Peterbilt and come with a 1-month warranty, suitable for various car and truck models.s.