Usage Tips:MATERIAL -- This key is designed with a shape, that is made of zinc alloy with electrolytic polishing surface, it is sturdy and durable handy tool, you can apply it for a long lasting time.DURABLE DESIGN -- Designed for control cabinets and shut-off systems in the supply of gas, water and electricity.With compact size and body, it can be hang on the key ring for easy carry.MULTI FUNCTIONS -- It has 4 shapes, including 2 square shapes, 1 triangular, and 1 key shape, it is multi functional and can be applied so long.Utility key tool is suitable for most radiators and gas or electric meter boxes; Radiator keys can reduce noises from radiator systems when bleed trapped air from radiators; Multi-functional keys can as practical wrench to turn the screws, suit for many valves.The utility key is not suitable for some kind of radiator or electric, gas, water meter box in special size, please make sure the size is match your device before you make a purchase.colour:SilverMaterial:Zinc alloysize:7.2 x 7.2 x 1.3 cmPackage Contents:1 x Utility Key1 x Detachable ScrewdriverOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.