1. [Aluminum alloy material] Our template measuring tool is made of high quality aluminum alloy, equipped with metal buttons, sturdy and durable, easy to carry, and smooth edges to prevent injury.2. [Precise Measurement] The 6-sided folding ruler can be used for various complicated angle measurements, laser engraving mark, 12cm/4inch, durable, not easy to wear, never rust, and can read the measured value clearly. 3. [Wide Application] Our multi-angle measuring ruler is an indispensable measuring tool for construction workers, craftsmen and DIY enthusiasts. It is suitable for carpentry, masonry, ceramic tile, wood, glass, stone, laminate, construction and engineering projects, etc.4. [Easy to Use] With this multi-angle measuring ruler with positioning hole, you can adjust six metal knobs to precisely create the shape you want, then find the correct drilling position.Number of pieces delivered: 1