The bingo balls are made from wood with large letters and numbers, no sharp edges, and are durable and safe to use. The set includes two additional blank balls to replace lost/worn bingo balls. The bingo set consists of 75 balls (B-1 through O-75). Each ball is engraved with large letters and numbers, making it easy to read for everyone. Great for bingo games, bingo halls, parties, family and friend gatherings, and game nights.