Features: 1. This filament is applicable to Low/Room Temperature 3D pen. 2. Compatible with most 1.75 mm 3D pens and printers 3. It is made from food grade PCL,which is green and environmentally friendly 4. It is reusable: in 50degC boiled water, it can be changed into a substance like plasticine, thus can be reshaped 5. There are 10 different colors, which makes this product a great material for 3D pen to create colorful projects Specification: Material: PCL Optimum Notice: 1.Due to the different monitor and light effect, the actual color may be a slightly different from the picture color. 2.Please allow 1-3mm differs due to manual measurement.