Durable Aluminum Material: This multi-angle measuring roller is made of high-quality 5mm aluminum alloy and will not break due to mud or rust - more durable and stronger than plastic. Upgraded Angle Ruler: This set includes 2 six-fold rings, metal knobs for each angle with sleek positioning holes where you can adjust six metal knobs to create the desired shape and find the position up. The right hole. With 6 folded edges, users can easily create and measure special angles or shapes with the angle finder tool to increase productivity. Metric and Imperial Units: These measurements will be expressed in inches or centimeters. With laser engraving marks, you can read the measurements clearly for years to come. They won't break, fade, or damage. Wide Applications: This versatile tool is designed to create baubles, arches, cutouts, and anything else you might use in carpentry, brick, wood, glass, stone, laminates, project construction, engineering, and more. Use it to mark tiles, floors,