High Material: The universal construction key is made of high quality zinc alloy, with a nickel-plated surface, which has rust and corrosion resistance, is not easy to deform, is robust, construction site key,square control cabinet key and can be reused for a long time. Practical Design: The universal construction key has a cylindrical lock nose for PZ core locks, and there are no irregular cylinders in the shell structure. And with a practical scale design, construction site key,square control cabinet key can be perfectly used for shell structures. Easy to Use: On the cylinder of the universal construction key there is a laser engraved scale with a length of 22-75 mm, accurate scale, clear writing and a pointed end with a 3mm socket wrench. the construction site key,square control cabinet key is easy to use and is very suitable for checking heating valves or opening ventilation grilles. Multifunctional Use: Universal construction key are widely used, with a pointed hexagonal socket wrench, which is used to loosen or secure the door handle. The construction site key,square control cabinet key can be perfectly used for the shell structure. The universal construction key is an ideal help as a control cabinet key or when door handles are not yet installed. The Package Includes: You will receive a universal construction key with pointed hexagon and a universal construction key short with 3-square key for checking heating valves or opening ventilation grilles. The universal construction key is easy to carry and not easy to tear and can be accurately measured for long-term use. Very suitable for measuring cylinder dimensions., Weight: 0.4629707502 Pounds, Manufacturer: Kellegour