Premium Material - 6 Inch Folding Triangle Ruler Speed Square is made of sturdy aluminum alloy construction, so it is not easy to break. The black matte finish prevents glare and is resistant to corrosion and oxidation, making it lightweight and durable.Foldable Triangle - The 6" Multi-Angle Measuring Ruler will increase the distance to 12" when opened, which fully meets your needs, and can also reduce storage space when folded, making it easy to carry.Sturdy and Durable - Aluminum alloy triangle ruler is embedded with magnets to fix the telescopic arm, which is easy to open without shaking, stable and durable. The stainless steel pillow scriber is hidden, with a line at the end, which is screwed and fixed on the triangle ruler and is not easy to fall off.Adjustable Positioning - When using a folding triangle square ruler, you can adjust the desired angle, then tighten the positioning nut, and press the middle adjustable lever to achieve precise positioning.Practical Gifts & Services - Speed layout tool is a must-have for any toolbox and is perfect as a gift for crafters, builders and DIYers. If you have any questions, please and we will answer you as soon as possible. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.