1、MULTIFUNCTIONAL ADJUSTMENT: You can change its shape according to your needs, just change the tightness of the pen holder and the nut to achieve different shapes to complete your needs. Locks in place after every adjustment for accurate accuracy 2、DURABLE ALUMINUM ALLOY: Made of excellent aluminum alloy, the surface is anodized to help prolong the life of the product 3、EASY TO OPERATE: The scale of the woodworking straight and arc scribing tool is clearly visible. You can draw parallel lines and arcs according to your own ideas, which is very convenient to operate 4、COMPACT AND PORTABLE: Very small in size and light in weight, which can be put directly in your pocket. Unique shirt pant belt clip design makes it easy to carry and store 5、WIDE APPLICATION: A versatile tool with over 15 marking applications including tile and paving, stud wall, gables and paneling, filler panels, shop fittings and built in furniture