Balance and marble game: 4 wooden boxes and 4 wooden balls in different sizes. 3 large red balls, one smaller green ball. You can stack the boxes with the red balls in funny positions and make figures. Or stack each box on top of each other and you get a marble run for the green ball. 8 pieces. Materials: lime wood, non-toxic water based color stain. Size: length large box 13cm, balls diameter 4.5 and 5cm.