High Quality: Made of high quality aluminum alloy, to extend the life of the scribe tool, making it durable and indestructible. Small and light, easy to carry and work. Small and easy to use: The product is small and light enough to fit in your pocket. Its unique shirt pant belt clip design makes it easy to carry and store. Precise: Perfectly designed to fit into tight spaces to conform to uneven natural surfaces, the pencil of tracing adds flexibility to trace on a variety of materials and textures for greater precision. Easy to Use: Locking design allows you to easily adjust pen holder tension and adjust the nut to the desired shape, then lock and secure the adjusting nut, ensuring you achieve pinpoint accuracy. Wide Application: It is a versatile tool with over 15 marking applications including tile and paving, stud walls, gables and panels, infill panels, store fixtures and built-in furniture.