Bingo Plastic Master Board for Small 7/8 inch Balls This new durable hard plastic master board will outlast the old cardboard designs previously used. It's a two piece unit that just snaps together in one click. After the bingo ball number is called, just set the ball in its designated space to ensure game accuracy. This card holds standard numbered set of 75 balls. Measures 7 x 17 x 1/2 inches and weighs 9 ounces.