YM0484X This educational toy square lock is great for learning or for entertainment Set up the rule-based module to form a square， no external force needed Hands-on learning experience An educational toy that requires careful observation of its internal structure Helps to develop children’s intelligence and inspire their potential A great gift for your beloved kids Material: Wood Package Details Weight: 108.07 g Size: 6.00*5.5*6.00 cm Package Includes * Wood Educational Toy Square Lock