Clear plastic tube made of clear flexible PUR (Polyurethane) with inner diameter of 2 millimetres. PUR tubing is often used to demonstrate the equal level of liquid in connected vessels. It is used to move liquids during experiments and it is used in varieties of machines to move fuel or lubricating oils. This specific tube with 2-mm inner diameter can also be used as a coupling for 2-mm shafts of small DC motors, generators, propellers and similar components. In addition to the plasticity, PUR tubes have a good level of elasticity and can be used to make belts for pulleys.