Product Dimensions: 6 cm length x 6 cm width [Built-in Magnets] This cube has built-in magnets to assist with rotation. The RS3M model has magnets set to the perfect strength, making it ideal for beginners to experts. When you actually turn it, you can really feel the strength of the magnets. Magic Cube Magnetic Cube [Built-in Magnets] Magic Cube Competition Cube 3D Puzzle Smooth Rotation For Professionals Experts Educational Toy (Magnetic Black 5X5) *Also on sale~* #naapo shop 25-21 / 0893