High Quality Material: The control valve is made of high quality copper, which is durable, high performance, anti-corrosion and anti-rust, and pressure resistant. Circular Release Ring Design: The seal release ring pneumatic adopts circular design, which is more convenient for disassembly and assembly. Better sealing. Safety: The pneumatic quick coupler has high pressure resistance, can withstand strong pressure without tripping, and can work for a long time without tripping. Easy to Use: Pneumatic quick couplers are easy to operate. install. You only need to push the connecting hose with compressed air to ensure a firm connection without additional sealing. Mainly Used for: Pneumatic quick connector is mainly used for quickly connecting air hoses, tools pneumatics, to adjust the air supply to change the driving speed of the pneumatic cylinder or other operating elements.