This product is a DIY set toy for students and kid to process science experiment, that is about circuit experiment, made of plastic material, simple but rational structure, this toy set will contribute great for children's cognition training and hands-on abilities. Features -Color:Black -Material: Plastic -Size: About 17.30X11.30X8.70cm/6.80X4.44X3.42inch - DIY circuit experiment toys for children to develop children's observation, thinking and analytical skills. - Made of premium and safe plastic material, durable and no bad substance for kids rest assure to play with. - Happy and easy to learn about physics. Exercise your child's hands-on skills. - Learning science skills is a great gift for your child's early education. - With educational toys for students, you can make your kids have a great time. Package list: 2 x set of scientific experiment prop