These colorful bingo calling cards are made from thick art paper with a plastic coating, providing toughness and resistance to folding. Each card features large print letters and numbers, making them easy to read for anyone. The professional bingo calling cards set comes with 75 plastic cards (B-1 thru O-75) for calling a bingo game, 3 blank cards to replace lost or damaged cards, and a rules card with basic instructions. These colorful cards make calling bingo much more manageable and save time between games, and they don t roll around or get lost easily like bingo balls. You can put these cards in your handbag and take them to a game night, party, family reunion, birthday party, park, or any other occasion you want to play.