Ideal for a wide range of applications: automotive, marine, industrial, office, home The tubing is a corrugated tube used to provide protection to a wire harness. It is lightweight, very flexible and easy to install of the many advantages. Comes in many different sizes such as: 4mm, 7mm,10mm, 13mm, 16mm, 20mm, 25mm, 32mm, 38mm, 40mm, 50mm