This classic 3x3 puzzle cube comes in a set of 36 pieces, each designed to challenge and entertain children aged 6 to 12. The cubes are made of durable plastic and are stored in convenient bottles for easy organization and display. Ideal for developing problem-solving skills and hand-eye coordination, these brain teasers are perfect for classrooms, party favors, or retail shelves. Sold wholesale by the box. Options: 5.7 cm.