High Compatibility: Ours pipe fittings are suitable for PEX and PP plastic pipes, primarily used for connecting pipes in various applications such as water heaters, air conditioning systems, plumbing systems, hydronic heating systems, electrical conduits, and hot and cold water distribution in RVs, providing an excellent solution for pipe-to-pipe or pipe-to-fitting connections. Durable Construction: Made from high-quality solid brass, these fittings are corrosion-resistant and can withstand high temperatures. They prevent wear, corrosion, scratches, passivation, and other damage, ensuring they are sturdy and durable. The lead-free brass material is hygienic and safe, allowing for reuse (with a pipe puller). Professional Safety: This set of pipe fittings includes 50 clamp-style straights and 100 clamps, all meeting the same standards for commercial and residential plumbing applications. Each fitting can withstand pressures of up to 100 PSI and temperatures of 82°C/179.6°F