1. Easy to Use: The length is easily adjustable with 4 buttons and locks securely in place. Insert the tool between two walls, tighten the screws firmly, and pull to measure length and side angles, allowing you to measure stairs or elevations. It is simple to operate and can be used to mark cutting lines, for a variety of projects. 2. Quality MaterialOur stair template is made of aluminum alloy, sturdy and impactresistant. Anodized for hardness, durability, and reusability. 3. UserFriendly Length: Easily adjustable with 4 buttons and locks securely in place. Insert the tool between two walls, tighten the screws firmly, and pull to measure length and side angles, enabling you to measure stairs or elevations. It is simple to operate and can be used to mark cutting lines, ideal for various projects. 4. Wide ApplicationOur measuring tool can be used in many woodworking scenarios to help you achieve accurate sizing and angled cuts for stairs, elevations, shelves, and drywall.