Heavy duty metal. This is a professional grade bingo set up, Only played with it 1 time, about 150 reusable cards, all balls are in perfect condition and are all present. The Regal Bingo party bingo set is a complete and professional-grade game set perfect for hosting game nights or gatherings. Standing at 20 inches tall with an 11-inch cage, this metal set includes everything you need for a fun and competitive game of bingo. The vibrant red color adds a touch of excitement, while the sturdy construction ensures durability for repeated use. Weighing 4.99 pounds, this set is easy to transport and set up for a memorable gaming experience.