These are custom-fabricated wall-mounted brackets that I used to support massive butcher block workbenches at my old shop. They are preposterously heavy duty, made from 2" x 2" x 1/4" thick angle iron. Each leg is 24" long, and has mounting holes for 1/4" lag bolts. I put one on the scale and it's 13.6 lbs. Your wall will fall down before these things fail. I have 3 pairs available; at $110 per pair.
At my shop in Goleta and available to see by appointment. Please include your name AND phone number with initial inquiry.