Description: This tube is divided and both inside and outside are cardboard. Very flexible and ideal for working in tight spaces. Reduces the number of fittings required to ensure installer/user can perform smooth, tight turns. Save time, effort and money. PVC tube with outer PVC helix for strength and flexibility Easily coiled for storage and transport. Sun, Ozone (UV) Smooth inside and unrestricted flow reduces operating costs. Use with spiked or insert fittings and appropriate clamps. Shock and shock resistant Widely used for machine lathe, electrical equipment, food machinery and equipment, automatic instruments, electric motor, cable protection, etc.