The Platform Post Mounting Kit for the Backstroke Start Device consists of a vinyl-coated 1/4 inch thick stainless steel plate and two brackets shaped to lock onto 2 inch square single post frames (starting platform frames).
Kit includes: 1 Mounting Plate, 2 3/8″-16 x 1.25″ Socket Head Cap Screws, 2 5-145-MG 3/8″ Flat Washers, 2 3/8″ Lock Washers, 2 3/8-16 Acorn Nuts, 1 Front Bracket, 1 Back Bracket, 4 1/4″-20 x 1″ Flat Head Screws, 4 05-14-111 1/2″ Flat Washers, 4 1/4″ Lock Nuts.