The Gembird PCL filament set provides a versatile collection of ten different colors for use with 3D pens. Because it is made from polycaprolactone, this material melts at a low temperature, which means you can create shapes without the risk of burning your hands. Each strand has a standard diameter of 1.75 mm and the entire set weighs 0.15 kg. Since the filament is odorless and non-toxic, it is a safe choice for hobbyists and children who want to build small models or repair plastic items at home.