[High Quality Material]: The handy key is cross-shaped, made of high quality zinc alloy, solid and durable. [4 Shapes]: The metal cross key includes 2 utility keys of square shape, 1 triangle water meter key and 1 key shape gas meter key. [Easy to Carry]: Proper size to carry your hands or put it in your bag, and there is a hole in the middle of the cross key, it can be hung on the key ring for easy carrying. [Wide range of applications]: The multi-function knob can be used as a convenient wrench to tighten screws and is suitable for valves such as electric, water, gas, trains, cabinets, elevators, etc. [Tips]: This utility wrench is not suitable for some types of radiators, please make sure the size matches your device before purchasing.