1. Material: The practical wrench is cross-shaped, made of zinc alloy, strong and durable. 2. 4 Shapes: Metal cross wrench includes 2 square shaped utility keys, 1 triangular water meter wrench and 1 key shaped gas meter wrench. 3. Easy to Carry: Appropriate 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 keychain 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. 5. Wide ApplicationCan be used not only in faucet, valve, spigot but also in cupboard,electric, gas meter, hose bib,train, elevator and outdoor.