It was from some scrap aluminum left over from boats. The base winch plate is 5/8" thick and sides are 3/16"to buy the material, none of you tight asses would pay what it cost in material, LOL. I would guess 500 in material alone and I usually do 50 to 100% material cost for my labor, putting you out of pocket 750-1000 for a bumper. Then the fact that I would have to buy a sheet of 5/8" at 1200 bucks, and a sheet of 3/16" at about 300 bucks puts me in a bind with 1500 out of pocket. Granted I would be able multiple bumpers.