PREMIUM MATERIAL: The shape duplicator is made of lightweight and durable ABS plastic. Universal aluminum alloy ruler with black oxidation coating, connected by metal buttons and bolts, rustproof and will not scratch work surfaces. High precision: ABS anti-slip sheet is designed against wet gravity to keep the accuracy of the duplicated shape. The tool has ruler marks on the body and has imperial and metric scales, meets all your measuring needs, giving you precise measurements. Wear-resistant and durable: the ruler of angle has serious laser scales, which are less subject to wear and are more durable, perfect for precise angle measurements. With 4 adjustable 2-sided arms, you can create a custom stencil for each task. Easy to use: just press the contour gauge against the target object to get the shape you need , as for the six-sided ruler, all you have to do is place the tool on the model being processed, slide the ruler to the desired row, tighten the screws to measure the copy. Combo kit: this 10 inch contour duplicator and 6ct angle measuring tool are great for duplicating shape on tile, wallpaper, carpeting, laminate flooring, and more. The combo makes projects easier.