Features: Brand new and high quality Aluminum Alloy Material: Stair gauges are made of anodized aluminum alloy. More frictional and can work better. Lengthened size: It is very suitable for stair stringer layout, rafters layout, etc.It can be easily laid out on any material, especially when the wood has gaps. Recessed incisions: Aligned them with specific ruler marks on the frame square. When the corner cutter is fully inserted, the ruler marks can be seen through the recessed incisions, increasing field of view area. A variety of functions: stair stringer and rafters layout, circular saws guide rail, frame square accessories, use to mark repeated angles on square, use to guide the saws on square for angle cutting. Dedicated storage: The gauge is equipped with a wire rope to provide a dedicated storage location to prevent loss. They are also very light and easy to store. It can be hung on work bags, magnetic tool storage panels, and storage racks. Specifications: Material:Aluminum Alloy+Stainless Steel Color:Red Size:Approx.73x25mm/2.87x0.98inches Package Includes: 1x Square Auxiliary Clip note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.