Zinc Alloy Wrench Multi-Function Square Wrench Universal Construction Wrench with Allen Key Anti-corrosion Wrench for Measuring Open Door Window Cabinet - Silver Corrosion Resistant, High Hardness: Our universal construction wrench is made of high quality zinc alloy. The universal key is extremely durable thanks to the shiny nickel finish. It has the ability to prevent corrosion and resist most acids and other corrosive agents. And after heat treatment and hardening treatment. Make it last longer. Easy measurement with clear scale: A handy scale behind the square key measures cylinder lengths from 25 to 75 mm. Laser engraving. The scale is accurate, the writing is clear, and it is not easy to wear. thus effectively preventing Corrosion and provides accurate measurements for your long-term use. Square chuck key: Architect's key with cylindrical nose for mortise lock, without profiled cylinder in the outer structure of the case. 3 square keys in sizes 6, 7 and 8 mm. Check the heating valve or open the ventilation grille. Allen Wrench: This universal construction wrench features a 3mm Allen key and a short sprocket with a flat cam on the end. For loosening or securing door handles. The control cabinet and the service covers can also be opened effortlessly. Versatile Construction Wrench: The construction wrench is a measuring ruler used to measure the angle of a profile cylinder. The key to new construction is the recovery tool, especially in hull construction. key The structure is the ideal aid as a switch cabinet key or as a door handle that has not yet been installed. It can also be used as a bottle opener. Quantity delivered: 1 piece