The material: this silver utility key is crossshaped design, made of good quality zinc alloy, sturdy and durable, you can apply it for a long timeMultifunction : the utility meter button has 4 shapes including 2 square shape, 1 triangle shape and 1 button shape shown in the picture, it is functional and can be used as long as according to the size and shapeThe dimension: the 4way utility button measures 7.2 x 7.2 x 1.3cm / 2.83 x 2.83 x 0.51inch, the right size for you to carry or hands put it in your pocketThe wide application: the multifunction knobs can serve as a convenient wrench and turn screws, suitable for many electric, water, gas, train, cabinet valves , elevator, etc.Warm note: the wicked key is not suitable for any type of radiator. Before buying, please make sure the size fits your device