Tetrapod pen holder

Tired of loosing your pens? Print this exclusive Tetrapod pen holder. Tetrapods are used to protect the coastline from erosion. They are normally manufactured with sea water resistent concrete, weight approx. 6 tons each. They are positioned along the coastline to break the waves and protect the coast. The gaps between the elements provide shelter for marine animals. For an easy print I have seprated the Tetrapod into two halfs. Glue them together once the print is finished. The Tetrapod