Hair gunya is one of the types of gunya that is known by this name because of its high precision. Gonio is one of the most widely used measuring tools in industrial and non-industrial environments. The main use of Gonio is to check the angle between two pieces so that they are perpendicular. Hair gonia is one of the types of gonia, which is known by this name because of its high precision and elegance. The main use of gonia hair is in molding and turning industry. Very hard metals, such as steel, are used to make hair buns, so that they have high strength and resistance against impact and pressure. Usually, hair gonia is produced in different sizes, which are selected depending on the size of the piece and the type of gonia piece. Today, gunya hair is produced by different companies with different qualities, and according to their quality, the price of gunya hair is also different.