The bingo master board is made of thick Abs plastic, with a simple two-snap design that can be pulled apart into two pieces to facilitate storage. It has 75 precise numbers for easy reading. Place the bingo ball on the assigned slot of the tracking board. Bingo callers can effortlessly call and track their 7/8"" bingo balls (not included), never losing track of numbers! It is excellent for bingo cage games held in bingo halls or parties, barbeques, or family bingo game nights.