The Nash PET ballpoint pen with click action mechanism and supplied with black ink This popular pen design has an upper and lower barrel both made of PET plastic. PET plastic is a clear, strong and lightweight plastic. The Recycled PET Nash Ballpoint is made from 48% post-consumer recycled material of the barrel and features chrome accents. This model is a more sustainable option in our bestselling Nash range and is available in a variety of colours. PET Plastic.