Pack of 2. This heavy duty loose key 1/4 turn angle stop valve is the solution to prevent tempering or accidental on/off switching of water supply. Use in commercial applications such as public restrooms, schools, churches, hospitals, government buildings, office buildings, hotels, apartments, and rental properties. Certain jurisdictions and plumbing requirements will require these valves to be installed in the facility. This long lasting, dependable shut-off valve can only be turned on/off with the included loose key and prevents unauthorized personnel to temper with the valve's switch. This valve is sized at 3/8" OD compressed and it is a chrome plated, lead free compliant, solid single piece design made for long-lasting durability and heavy duty usage. Every valve is leak-free quality controlled by the factory during the manufacturing process. For use in potable and non-potable plumbing and water distribution systems.