Number sets contain 30 pieces, including 3 of each digit 0-9. Each lightweight character has a rare-earth magnet strong enough to hold a greeting card. They're small but mighty! Wordbits have a premium matte finish and are set in a custom typeface. They are made from strong ABS plastic, BPA and phthalate free. Give your locker a Wordbits glow-up! They're the perfect match for all our products (because they're all magnetic!)