Secure Locking Mechanism: Features a knob based locking function to maintain stable and measurements and incisions, enhancing and workflow during stair installation Sturdy Galvanized Steel Construction: Made from galvanized steel for hardness and resistance to wear, maintaining consistent functionality in both professional and home improvement settings without deformation Practical double Set: Includes two template tools for combined use, ideal for real world stair assembly scenarios, ensuring stability and convenience during installation Flexible Adjustable Configuration: Provides adaptable length and corner adjustments to accommodate various construction needs, suitable for specialists and household projects alike Professional Stair Measurement Tool: Accurately assists in positioning stair treads, risers, and shelves, facilitating easy alignment and user friendly handling for efficient results, Manufacturer: HDOYTXXM