Wave Form Helix, 10cm Closed Length x 8cm Diameter - A Scientist's Version of The Classic Toy

STRETCHY SPRING TOY: Twice the size for twice the fun. High quaity and extremely robust when fully stacked the coil measures 8cm in diameter and 10 cm high.CLASSIC CHILDHOOD TOY: Tip it over the stairs and watch it walk end-over-end in a mesmerising fluid motion. Stimulating sensory play - strike the spring to create a laser gun sound effect.FUN FOR ALL AGES: Children and Adults, Boys and Girls alike will love this super metal coiled spring! Suitable for Ages 5 and Over. • Performs a number of fun tricks. Jumps from hand to hand or watch it tumble down the stairs and spring from table tops as it stretches and re-forms itself with only the aid of gravity and its own momentum. • The similar springs can be used to show the principles of Hooke's law, to simulate the properties of waves and to demonstrate the effects of gravity.