DescriptionIf you are looking for a science toy for your kids, then you must not miss our DIY gear fan toy set. Made of ABSmaterial,it is high-quality and durable.Through DIY and knowledge, children can understand the role of gears.Features- Color: Random Color.- Material: ABS.- Size: Approx. 11.00X6.50X2.50cm /4.32X2.55X0.98in . - Through the DIY gear fan, children can easily understand that gear transmission is a form of power transmission. - Using ABS material, firm and solid, long serving life. - Simple to assemble and dissemble, which is suitable for students and teachers. - Convenient for students to understand the role of the gear.- An intuitive teaching aid suitable for teaching the role of the gear.