1、Children can learn some scientific knowledge while playing, expand scientific knowledge and promote children's intellectual development. 2、It can cultivate children's operation ability and logical theories through disassembly and assembly. 3、It can also help them think, increase creativity and interest in learning, hand‑eye coordination and concentration. 4、Made of high quality plastic material, safe, non‑toxic, and comfortable without worrying about scratches. 5、Can be used as an educational and experimental tool in the classroom to enhance fun. A great gift for children. Item Type: Experimental Kit Material: Plastic Color: As shown in the picture Assembly Size: Approx. 18.5x17x8cm / 7.3x6.7x3.1in Weight: Approx.115g/4.1oz Applicable Age: Over 5 years old Ability Development: Intellectual development Experiment Type: Physics 2 x Base 2 x Conveyor Belt 2 x Connecting Rod 4 x Half Moon 2 x Backlight Hemisphere 2 x Long Axle 2 x Short Axle 2 x Belt Pulley 2 x Paperboard Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store