1. [Adjustable and Lockable] The waterproofness can be adjusted according to your needs. It is especially suitable for drawing irregular and complex-shaped objects. It will be locked and fixed after each adjustment to ensure accuracy. 2. [Both Ends Available] Our profiler has a rear pulley and a rear arrow. The rear pulley is smoother, and the end is smoother. The arrow control is more accurate and easier. The pen holder can be moved up and down anywhere, making it convenient to change styles. The precision profiler is made of high-quality metal, which is strong and durable. It is small, easy to carry and store. You can put it in a laundry box. Take this tool with you wherever you go. 3. [Accurate Shape Replication] A simple and effective method to replicate any shape immediately. Accurately reproduce the instant model of curved and irregularly shaped objects. 4. [Easy to Use] [Usage Method] The operation of the equalizer locking mechanism is very simple and can even be used with one hand. Hold the middle of the pen and press to draw a line. 5. Product List: 1 * Profile Knife, 3 * Pencils