Reliable fit: This gate valve locking device is suitable for 1 inch to 2-2-1/2 inch (25mm-64mm) diameter valve handles with stem diameter up to 3/4 inches.Always check the size of the faucet before purchasing to make sure the valve lock is perfectly suitable for your faucet Preventing water waste and saving water bills: External faucet locks prevent others from entering your water without permission, or pranking pranks not turn on your faucet, wasting water and increasing your water bills.Great for unsupervised faucets. Industrial grade: The water device uses impact- engineering material, which can withstand harsh conditions without breaking.The safety padlock is made of steel with a protective plastic shell, which is rust-proof and non-conductive.Red external warning not to touch Full Set: Set includes 4 valve locks and 4 safety padlocks, each with 2 keys in case of loss.The gate and valve locks match perfectly, and can be easily installed without tools.The hollow round housing perfectly fits the handle of the faucet and simply locks with the included padlock, the device is enclosed in the valve handle and rotates freely to prevent it from opening without authorization. Widely used: It prevents the valve from opening during maintenance and repair, and is useful on outdoor unsupervised faucets.It can also be used to lock oil, natural gas, propane tanks.Safety protection for valves in petroleum, chemical and industrial pipeline systems, Weight: 1.56858899413 Pounds, Manufacturer: Prterver