Features: Made of premium-quality aluminum alloy, with good strength and corrosion resistance. The hexagonal design is more suitable for edges than the circular shape, and the higher body allows the ruler to be completely perpendicular to the material, making the clamping of the workpiece very stable and accurate. Use on carpenter square to mark repeated angles, and use on carpenter square to guide saw for angle cutting. Ensure that each staircase is very consistent and can provide you with accurate frame fixture layout every time. Portable anti-lost design, easy to store and carry. Specifications: Item: Tall Stair Gauges Sets Material: Aluminum Alloy Color: Black Packing Size: 9*8*5.5cm Packing Weight: 95g Package List: 1* Tall Stair Gauges Sets