This item is a set of optical experiment tools, manufactured with , so that it can serve you for many years. material can ensure its durability and practicability. It is perfect for students to use. A great present choice for students. Features - ColorAssorted Color - Material: Plastic. - Size: About 46.00X2.00X2.00cm/18.08X0.79X0.79inch. - Made of safe and gentle materials, your child can use it for experiments with confidence. - The kit is fully equipped to meet your needs, lightweight design, appearance. - It aims to provide children with more relaxed and interesting teaching methods and help children learn better knowledge. - With a simple structure and application method, children can learn knowledge and gain a sense of accomplishment. - With a wide range of applicable people, it is an excellent teaching tool for physics teachers and creative toys for children. Package list: 1 x set of optical experiment tool kit