The 2 pk Orbit 3/4" Sprinkler Valve Jar Top In-Line Heavy Duty 57460 is a set of flow control valves designed for sprinkler systems. Made by the brand Orbit, these valves feature male and female thread sizes of 3 3/4 inches each, making them suitable for connecting to sprinklers. With their heavy-duty construction, these valves provide reliable flow control for efficient watering in your garden or yard.