This item is a set of floating ball experiment tools, manufactured with premium materials, 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 gift choice for students. Features - Color: Assorted color. - Material: Wooden. - Size: About 14.00X11.00X9.00cm/5.50X4.32X3.54inch. - Made of safe and durable 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: 2 x physics experiment tools