●MATERIAL: The ping pong size bingo balls are made from polypropylene, lightweight and smooth. ●SIZE: The bingo ball 1.5" in diameter, for manual large bingo cage use only. ●INCLUDED: The bingo set includes 75 bingo balls. Numbered B1 to B15, I16 to I30, N31 to N45, G46 to G60, O61 to O75. ●DESIGN: White or multi-color bingo balls available. Black ink printed the large letters and numbers, one side or two sides printed available. ●APPLICABLE: The bingo balls will not work in a small bingo cage nor electronic bingo equipment. Great for party, prize raffles, fundraisers, bingo nights, and more.