Product descriptions from the supplier

Material: Aluminum alloy+ABS
Color:Black+Red
Extend size: about 36/48/60/72cm(14.17/18.90/23.62/28.35in)
Application: suitable for measuring and marking straight lines and corners of carpenters, bricklayers, etc
Package:1Pc Folding Horizontal Ruler Feature:
1. Foldable Function: Multi-function foldable level, which can be folded as a rectangle-shape block for daily storage and a regular straight level ruler for versatile jobs.
2. Small Volume: Multi-Function Foldable Level is easy to store and the small size makes it a great space saver. It is a nice addition to the traveling toolbox, which you can take to anywhere for different work.
3. Multi-Angle Measurement: The Multi-Function Foldable Level features 3-5 very clear and intuitive green acrylic vials, which obtain preciseness accuracy providing a wonderful and joyful experience for measurement and calibration of indoor and outdoor jobs.
4. High Quality: Multi-Function Foldable Level is made of a high-quality aluminum profile processed by oxidation that avoids rust and eases scratching. ABS connectors and TPR endcaps are the double armor for accidental drop and long-term storage.
5. Widely Application: This hinged level tool allows you to fold it to any angle to bypass obstacles and measure multiple angles simultaneously, such as for pipes, stairs and corners, folding or extending to use are available.
Note:
Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!
Please allow 1-2cm(0.39-0.79in) measuring deviation due to manual measurement.