Practice children's handing ability、 so that to develop children's imagination. Stimulate both your left and right brain、 feel free to create what shape you want. Help to develop your logic thinking ability. Suitable for children and adults. Make more fun with these 216 magnets! Dimensions: 0.20 in x 0.20 in x 0.20 in (0.5 cm x 0.5 cm x 0.5 cm) Weight: 3.70 oz (105 g)