Bingo balls need to be replaced every few years. Always replace your bingo balls with the same size ball that matches your bingo cage or electric blower. Shop discount bingo balls made of wood and plastic for small bingo cages. The wood bingo balls are 3/4 inch diameter and the small, plastic bingo balls are 7/8 inch diameter. We also sell 1.5 inch diameter ping pong ball size bingo balls. The professional series bingo balls are made for electric bingo blowers while the less expensive bingo balls are for bingo cages.