NPT THREADS: American National Pipe Taper (NPT) threads; 1/4" NPT male pipe x 1/4" NPT female pipe, 4-pack SUPERIOR THREADS: SEELUBALAR is committed to providing quality products. The deeper and smoother thread design makes installation easier and improves efficiency PREMIUM MATERIAL: Made of high-grade solid brass, these fittings are strong, wear-resistant, and more durable than iron or galvanized iron pipe fittings. The solid brass construction can withstand temperatures up to 100°C (212°F) SAFE TO USE: The 1/4" female-to-male brass pipe fitting adapters comply with ASTM B584 and ASME/ANSI B16 standards. These brass adapters are corrosion- and scratch-resistant, and can withstand temperatures up to 212°F and pressures up to 300 psi VERSATILE APPLICATION: These brass pipe fittings are suitable for pipe extensions, spigot connections, pipelines, etc. They can also be used with grease, fuels, natural gas, as well as in instrumentation and hydraulic systems for low- and medium-pressure pipeline connections Feature: 1. Adapter for connecting pipes or fittings of different thread types, And brass material with corrosion resistant, strong and wear resistant, can be used in wet environments. 2. Deeper and tighter threads allow better sealing, bite, enhancing fixation, not easy to slip. 3. Easy to install, Hexagonal female connector and smooth threads will save time and improve efficiency. Specification: Name: Brass Pipe Fitting Adapter Threads: 1/4" Male NPT x 1/4" Female NPT Material: Solid Brass Tip: It is recommended that all fittings must be sealed with sealing tape for a better seal, in the United States and its possessions, federal law does not allow the installation of these fittings for potable water