It is a physics Newton's pendulum experiment tool for students, which is made of premium wood and plastic for and safe use. This professional experiment kit for physics teaching can train the student's practical ability and their interest in learning. Features - Color: As Shown. - Material: Wood, plastic. - Size: About 14.50X10.00X11.00cm/ 5.70X3.93X4.32in. - Stimulate students' interest, improve analysis and observation skills. - Scientific physical experimental tool to exercise student's practical ability. - Easy to operate, making physical experiment learning more efficient. - It is simple design but practical in use, bringing much convenience to you. - Exercise children's hands-on ability to understand the basic principles and relevant knowledge of Newton's pendulum. Package list: 1 x set of toy