Made of high-quality aluminum alloy, the surface is anodized, the structure is stable, strong and lightweight, not easy to break or deform. Product Function: The speed square 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: Supercharge your carpentry projects with these incredibly versatile stair gauges. They're a perfect fit as an add-on for your trusty frame square. Whether you're installing stairway beams, 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