These are the best replacement Wooden Bingo Balls (Set of 75) we have seen. These bingo balls are made for small cage use and are 7/8 inch in diameter. Made of solid hardwood with black numbers and letters engraved into the wood for long life. These balls are preferred over plastic as they do not break or chip. These balls are numbered and lettered. Numbers on each ball range from 1 to 75 and the letters on each ball are the letters in B,I,N,G and O.