Safety first! This valve lockout device is seriously smart protection for preventing accidental operation of valves in your home or workplace. Made from industrial-grade ABS plastic with steel components, this thing is built to last while providing crucial safety isolation. The half-moon shaped design securely locks onto valve handwheels between 25-64mm (1-2.5 inches) in diameter, preventing anyone from accidentally turning valves they shouldn't. It comes with a padlock and two keys, so you can lock it in place and control who has access. Perfect for securing household gas valves, liquefied gas systems, water meters, floor heating controls, drainage switches, and urban water/sewage systems. The foolproof design means once it's locked on, that valve isn't moving until you unlock it - no more 'oops' moments that could lead to leaks, flooding, or gas issues. Whether you're a homeowner wanting extra safety for your gas line, a landlord securing utility meters between tenants, or working in industrial settings requiring lockout/tagout procedures, this device provides peace of mind that critical valves stay exactly where you set them. Simple, effective, and could prevent some serious headaches - or worse!