Reliable quality: This marking tool is made of high quality ABS and aluminum alloy, with anodized surface, durable, strong and durable. We provide 6 refills Multifunctional tool: you can easily adjust the resistance of the pen body and change the resistance of the nut to achieve different shapes such as straight lines, arcs and multi-angle contours . It locks into place after each adjustment to ensure precise accuracy. Easy to carry and use: This multifunctional marking tool is small and lightweight, you can put it directly in your pocket, easy to carry and put away. It is a very useful tool. Multiple usage modes: This tracing tool has four usage modes, namely contour mode, tracing mode, circuit mode and edge adjustment. Multiple usage modes can meet your different needs. MULTIPLE APPLICATIONS: This marking tool is a versatile multi-purpose tool ideal for marking very complex contours such as carpentry installations, other renovation and renovation work. Note: The data is all measured manually. Due to the difference in light and display, please allow 1-3cm error. Please refer to the actual item received.