Features: Crafted from 304 steel with seamlessly construction, this pneumatic quick connectors ensures leakfree performances , ideal for industrial air fittings and high pressure systems. Featuring HV180-210 hardness and oxidation resistant coating, the metal body withstands extreme wear, corrosions, and temperatures up to 200°C, outperforming standard plastic air connectors in demanding environment. Design for mechanical engineers, factory maintenance team, and industrial equipment operate requiring reliability pneumatic connection in manufacturing plant or heavy machinery applications. Optimized for compresseds air systems in automotive workshops, chemicals processing facilities, and machinery where corrosions resistance and repeated high pressure cycles is critical. Its reinforced steel spring clip and seal maintain airtights integrity through 10,000+insertion cycles, reducing downtimes in continuous production lines while ensuring industrial durability. Specifications: Component:Steel Height:Approx.50mm/1.97inch Option Type:PU4,PU6,PU8,PU10,PU12,PU16,PU14; Features: highly temperature and high pressure corrosions resistance,antiaging performances improved by 1.5times,repeated plugging and unplugging is without loss. Body hardness HV180~210; Package Includes: 1pc Pneumatic Quick connectors note: Please allow 1-10mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.