1. Precise Scale: Stepbystep templates make it easy to operate and adjust to the correct length and angle, achieving desired results simply and accurately without the need for a tape measure, saving most of the working time. 2. Material: The stair tool is made of steel and anodized aluminum alloy to prevent discoloration in humid or temperature environments. The screws are not prone to breaking, are reusable, and easy to carry. 3. Easy to Use: The length can be easily adjusted with 4 buttons and securely locked in place. Place the tool between two walls, tighten the screws firmly to measure length and side angles, then you can measure stairs or risers. It is simple to operate and can be used to mark cutting lines, making it ideal for various projects. 4. Wide ApplicationOur measuring tool can be used in many woodworking scenarios to help you achieve the correct size and angled cuts on stairs, risers, shelves, and drywall.