Material: The utility key is made of zinc alloy, which is not easy to break or rust, strong and durable, and can be used for a long time. Please note that our products may not be suitable for oversized radiator valves. . Durable Design: The utility wrench includes 4 shapes of meter wrenches, 2 squares of different sizes, 1 triangle and 1 solid square wrenches of different sizes. . Easy to handle: The surface of the 4-way meter wrench is electroplated to improve wear resistance, corrosion resistance, and smoother and more beautiful. It can be hung on the key ring for easy carrying. Very convenient and practical. . Dimensions: 7.2 x 7.2 x 1.3 cm, the right size to carry in your hands or put in your pocket. Suitable for electric, water, gas, railway, cabinet, elevator and other valves. . Wide application: The key can be opened the door and window of the train, car, elevator, subway, electrical control cabinet, electric meter box, marine shop, meter key category (magnetic). Widely used for drawer, glove box, control cabinet or other safety equipment. .