This copper spring is specially designed for education settings, offer safe and reliable tool for students to explore principles of elasticity and vibration. Its polished surface and smooth contours ensure safe handling for children while stimulating curiosity and hands-on learning. Ideal for enhancing classroom demonstrations and fostering a deeper understanding of physical science. Features -Color:Silver -Material:Copper -Size:14.50X1.60X0.10cm/5.70X0.63X0.04in -Precision Craftsmanship: Designed with meticulous production techniques, ensuring consistent performance and durable reliability for long-term education use -Child-Friendly Design: Smooth edges and refined polishing prevent injury, making it safe for children’s hands during interactive learning sessions -Education Engagement: Encourages creativity and enhances students’ cognitive development through tactile and visual scientific exploration -Versatile Application: Ideal for classroom experiments related to elasticity, vibration, and sound, providing practical insights into basic physics concepts -Reliable: deliver an enjoyable and effective experience with strong construction and careful finishing for dependable use in teaching environments Package list: 5 x springs