QUICK INSTALLATION DESIGN: No extra tools required for quick setup and greatly improves efficiency. Ideal for contractors and hobbyists with multiple measurements MULTI-PURPOSE: Not only for measuring stairs, but also for square structures, it is a must-have for carpenters, metal workers, and builders PRECISION MEASUREMENT: These right angle clamps feature a precision design for optimal accuracy in all measurements, making them ideal for complex stair structures and construction ERGONOMIC AND SAFE OPERATION: Comfortable grip reduces fatigue during prolonged use and ensures detailed measurements are reliable and easy LIGHTWEIGHT CONSTRUCTION: Made of aluminum alloy, lightweight portability and durability, ideal for professionals who need long-lasting tools, Manufacturer: sheQImaoYI