Material: this silver utility key designs with a cross shape, that is made of zinc alloy with good quality, it is sturdy and durable, you can apply it for a long lasting time. Multi functions: the utility meter key has 4 shapes, including 2 square shapes, 1 triangle, and 1 key shape showed in the picture, it is functional and can be applied so long as according to the size and shape. Dimension: the 4-way utility key measures 7.2 x 7.2 x 1.3 cm/ 2.83 x 2.83 x 0.51 inches, proper size for you to carry it hands or put it in your bag. Wide application: the multi-functional keys can serve as practical wrench, and turn the screws, suitable for many valves of electric, water, gas, train, cabinet, elevator, etc.. Warm Notice: this utility key is not suitable for some kind of radiator, please make sure its size is match your device before you buy.