This cord is designed for physics experiments. The material is coated nylon which has little friction (which can alter scientific results). Always handy for a physics teacher to have around. Most common applications are pulley demonstrations and pendulums.
Eisco produces high-quality, trusted science education products and solutions to help students explore and discover science through hands-on experiences.
They produce more than 8,000 unique products for the science education and scientific research markets. Their core product lines include: Biology Models, Laboratory Glassware and Plasticware, Lab Equipment and Supplies, Physics Supplies and Apparatus, Rock and Mineral Specimens