Warm Tips: The key is not suitable for some types of radiators; please ensure the size matches your device. Multi-functional design with 4 shapes: 2 square, 1 triangle, and 1 key shape, providing versatility for various applications. High-quality material: Made of zinc alloy with electrolytic polishing surface for durability and long-lasting use. Durable and compact design: Suitable for control cabinets and shut-off systems in gas, water, and electrical supply. Lightweight and portable, it can be attached to a key ring for easy carrying. Wide application: Functions as a practical wrench for turning screws and operating valves in electric, water, gas, train, cabinet, and elevator systems. Ideal utility tool for plumbers, electricians, and maintenance professionals. Useful addition for workshop or tool kit. Note: This utility key is not compatible with certain radiators; verify size compatibility before purchase. Specifications: Condition: Material: Zinc Alloy Color: Silver Surface Treatment: Electrolytic Polishing Size: As shown in picture Weight: Approx. 59g Package Included: 1 x 7-in-1 Utility Key