The product description is "Polyesthylene Tube". Polyesthylene Tubes are also known as the "Tubing" and "Plastic Tubing". These tubes are made of polyester, a polymer that has the chemical formula C4H6O. Polyester is a polymer that is a type of plastic that can be molded into shapes. It has a tensile strength of 100MPa, and it is used in the manufacture of a wide range of products. The polyester has a molecular weight of 200-220 kg/mol, and it is formed from long chains of carbon atoms.