Precisions Measurement: This right angles clamp features high Precisions design for optimal accuracy in every measurement, ideal for complex stair structures and construction Quick Installation Design: Not require extra tool for fast setup, significantly improving efficiency—ideal for contractors and DIYer enthusiasts handling multiple measurements Versatile Application: Suitable for not only stair measurements but also square structure tasks, making it a must have for carpentry, metalworkers, and builders Ergonomic & Secure Operations: Comfortable grip reduces fatigue during extended use, ensuring and ease for detailed measuring tasks Lightweight Construction: Made from aluminum alloy, combining lightweight portability with durability, perfect for professional who need long lasting tools, Manufacturer: RGYBAO