Made of high-quality aluminum alloy, the is anodized, the structure is stable, strong and , not easy to break or deform. Product Function: The bracket has a hexagonal plane, which is more suitable for borders than a circle. Make the ruler perpendicular to the material, making your marking more precise. All-Around Stair Gauge Tool: your carpentry projects with these incredibly versatile stair gauges. They're a as an add-on for your trusty frame square. Whether you're installing stairway , making repeated marks at multiple angles on a miter square, or guiding a circular saw to make precise angle cuts, this stair gauge has you covered Please note that the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Color: As Shown Material: Aluminum Alloy Package Contents: 1 x Tall Stair Gauge Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.