Package includes: 1 shock-resistant plastic box; 3 graphic compasses, 1 ruling pen, 1 blunt locating pin, 1 extension bar securing pin, 2 pencil refills, 1 mechanical pencil; Sturdy plastic case to protect and store tools in one place in a backpack or desk. High quality: The professional compasses are made of aluminum and stainless steel. Durable and easy to carry. Extension beam design: An extension beam is attached to the large compass for drawing large circles. You can draw larger circles without having to measure and connect points. Replaceable accessories, a non-slip handle for pens, pencils, stylus or markers Wide range of uses: The drawing kit is a great assistant for those working with machine construction. The Geometry Compass Kit is suitable for architects, engineers, draftsmen, builders, roofers, teachers and students. This tool is perfect for DIY crafters and artists for a variety of geometry tasks