1、Made of plastic and metal material, safe, non-toxic, and eco-friendly. 2、Cultivating and developing children's interests, training hand ability. 3、Helping strengthen communication and promote family relationship. 4、Exquisite workmanship, great gift for children in birthday and festivals. 5、Light in weight, convenient to use and easy for changing. Features: 1. Made of plastic and metal material, safe, non-toxic, and eco-friendly. 2. Cultivating and developing children's interests, training hand ability. 3. Helping strengthen communication and promote family relationship. 4. Exquisite workmanship, great gift for children in birthday and festivals. 5. Light in weight, convenient to use and easy for changing. Specifications: Condition: 100% Brand New Material: Plastic, Metal Package Size: Approx. 11 * 11 * 3cm / 4.3 * 4.3 * 1.2in Fitment: fit for FT012 RC Boat Package List: 1 * Water Cooling System 1 * Water Cooling System Pipe 1 * Water Cooling System Connector