Had a leaking left rear brake can on the coach. Despite the original can saying MGM type 30 on it there is a twist. The typical type 30 you can get anywhere this can is a 30/24. Had to come out of Sacramento ( $150 each with freight). .Thought I would post up the part number for someone else future use. Replaced both cans and while I was at it replaced air dryer, check valves as well.
MGM 3429051