These are frame mount camper tie down brackets with the slide in reeivers. They are ove 600 a set lacally, I paid 499 on ebay. I was not paying close enough attention and got ford brackets instead of gmc and the seller won't take them back because I opened the box. Everything is there including the instructions. I'd like to get 400 but open to offers since I have no use for them. Also open to trades firearms, ammo .40, .556/.223, or .380