Bring any idea to life, or personalize your existing items - safe to Doodle on almost any material, such as LEGO, and the plastic can be easily removed, though will adhere firmly to clear plastics. 3Doodler Start Plastics extrude to 6 times the original length, so one 6 inch strand gives over 35 inches of Doodling.Details:Primary powIncludes an assortment of colors250 countBPA-Free, nontoxic and safe for kidsLow heat plasticCompatible with 3Doodler Start Pen only (sold separately)