With this mould, you can easily mark where the holes in the Biothane should be. The Biothane fits exactly, so the mould doesn´t shift when marked out and the markings are exactly in the right place. The mould also has guiding lines to show where the folds in the Biothane should Be. The mould is made of plastic and custom printed with a 3D printer. Suitable for 9 mm Biothane.