You are buying 1 complete rear backing plate that will fit a 350 Rancher, 400 Foreman, and 450 Foreman. I bought a pallet of NOS ( new old stock) brakes for these units. The pictures show a sampling of the rear units to give you an idea of what you're getting. All units are new but from sitting up there has been some moisture in some which resulted in some light rust as pictured, but nothing to affect the part. These are all OEM original parts and not the after market knock off parts.