Item Type: Windmilld Science Experiment Model Material: Composite wood Battery Type: 2 x AA batteries (not include) Package List 1 x Battery Box 1 x Motor 2 x Screws 1 x Double Sided Adhesive Tape 2 x Nuts 1 x Frosted Strip 2 x Puzzle Board Please prepare your own glue, sandpaper, scissors 1EDUCATIONAL TOYS: Improve practical skills, imagination and creativity of children. Promote hand eye coordination as well as hands on skills of children. 2SCIENCE EXPERIMENT: Easy to operate, children can follow the instructions step by step to make their own windmill model and improve more scientific knowledge. 3BATTERY POWERED: Powered by batteries, batteries are not included, ideal for the initial exploration of the world of science by children. 4GREAT GIFT: Windmilld science experiment model can be given as a gift to your boy or girl on Halloween, Christmas, Easter, birthday. 5RELIABLE MATERIAL: Using refined cutting process. Made of excellent composite wood with smooth and burr free surface.