Apache 39005800 1/2" Male O-Ring Boss x 1/2" Female Pipe (4-Pack) The Apache 39005800 1/2" Male O-Ring Boss x 1/2" Female Pipe is a fitting designed for use in hydraulics, pneumatics, pumps, and plumbing systems. This 4 pack of fittings features a durable construction from the trusted brand, Apache. With a 1/2" male O-ring boss on one end and a 1/2" female pipe on the other, these fittings are ideal for connecting various components in industrial and commercial settings. The high-quality materials and design ensure reliable performance and leak-free connections for a wide range of applications. Material: Steel Dimensions: 2 x 3 x 5 inches Weight: 2.7 ounces Compatibility: Ideal for connecting hydraulic hoses to valves and cylinders Durability: Built to withstand high-pressure environments