Bingo calling cards consist of a one deck of 75 playing cards (B-1 thru O-75) for calling a Bingo game. The calling deck takes the place of having bingo balls and cages. These cards are great for playing Bingo anywhere – camping, on the bus, etc. Shuffle them up and begin calling your bingo game. The bingo calling cards are plastic coated and are the same measurement of a normal set of poker cards.