ITEM NAME:DIY Mechanical Gear Assembly Materials Kit Kids Science Physics Experiment Toys Product Description Description: Specifications: Material: wood+plastic Size: 18 * 12 * 6cm/7.09*4.72*2.36" Color: as shown Recommended age: 5 years and older The purpose of the experiment: to understand the knowledge of simple mechanical energy, to stimulate children's curious nature and exploration ability. Note: When assembling products that require circuits, note that the red wire is connected to the positive pole of the battery box; the blue wire is connected to the negative pole of the battery box. All products have no battery, no pigment, no glue, and the color of the accessories is random. No color is specified. Please read carefully before buying. Contains small accessories and sharp objects, children need to be accompanied by an adult, please take care of children to avoid swallowing. Because the display pixels are different, there may be a little color difference. Due to different measurement methods, there may be an error of 1-3cm. Included: 1 Set X Toys.When assembling products that require circuits, note that the red wire is connected to the positive pole of the battery box; the blue wire is connected to the negative pole of the battery box. Included: 1 Set X Toys.
