Aluminum Alloy Material: Our construction pencil marker tool is made of aluminum alloy, and the is anodized, so the marker is not easy to rust, and it is very durable. > Simple Operation: This tracing tool is easy to operate, just change the tightness of pen holder and nut to get different shapes to meet different needs, and no complicated operation is needed. Adjustable nut: We only need to change the tightness of the pen holder and the nut, we can draw different shapes and contours, and it can be locked after each adjustment, so as to ensure precise precision. ✫With Belt Clip: This construction tool has a unique shirt pants belt clip design, we can put it in the pocket or clip it on the belt, very easy to transport and . Multifunctional application: our line of scriber for DIY woodworking makes it easy to reproduce a variety of shapes, ideal for laying tiles, cutting laminates and rugs, making ceramic and tool impressions, and more.