want to buy a set of professional DIY solar windmill assembly toy? Our product can meet your requirement. You can not only install it on your own, but also put it on the display rack as an exhibit. Christmas , festival or rewards, etc. Features -Color:Wood color -Material:Wood -Size:15.50X5.50X5.50cm/6.09X2.16X2.16in -Note: not included battery -This toy kit is very well-made of wood, precision cutting. Smooth surface, safe to diy. -Children can safely play with sets of exposure to harmful chemicals or dyes. -It will be good for children hand and brain development, the relationship between parents and children. -It can be a birthday, Christmas present or home decor for boys, students, and so on. - school-age boy and girls, and aims to lay the foundation for the growth of children intelligence and stimulate their practical ability and problem-solving ability. Package list: 1 x set of solar windmill