1.【High quality material】: The practical key is cross-shaped, made of high quality zinc alloy, solid and durable. 2.【4 Shapes】: The key in metal cross includes 2 square-shaped utility wrenches, 1 triangle-shaped water meter wrench and 1 wrench-shaped gas meter wrench. 3.【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. 4.【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 electricity, water, gas, trains, cabinets, elevators, etc."