Doorking 1803-047 Spacer-Nylon 3/8ODx.192IDx3/8L primarily used to create a specific distance between two joined fasteners or surfaces, lightweight and corrosion-resistant, chemical-resistant, durable and crack-resistant, strong for a plastic with a tensile strength between 10,000 and 12,000 PSI, good strength-to-weight ratio allowing them to be used in weight-sensitive applications.