Material:Square water meter box key is made of zinc alloy, not easy to rust or break, sturdy and durable to use for a long time. Size:Electrical cabinet key total length is 55mm, the head outer diameter is 13mm,square size is 8x8mm, compatible with most square keyholes. Application:Apply for opening and locking most power distribution cabinets, gas meter box, water meter box, electrical cabinets, elevators, and it is also an excellent wrench. Design:The electrical cabinet key is in T-shaped design, while the handle is D-shaped, which is helpful for you to make advantage of your strength and finish your work in an efficient way. Portable:The square socket key is small, exquisite and light in weight. You can carry it with you so that you can use it whe.