Use this item to study and illustrate wave motion. This high-quality spring is designed for use in demonstrations and experiments. It is able to stretch up to several times its original length!
Comes with a Teacher’s Guide
Closely wound spring 0.75″ (20 mm) Dia. is 6.5 ft (2 m) long and can be extended up to 33 ft (10 m)
WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.

Snake spring wave demonstrator