Package includes: There are 4 pieces 2 types of male/female compressed air quick connector, 2 ordinary SH20 and 2 ordinary PH20. High quality material: these compressed air quick connector are made from high quality iron. quality. Nickel-plated surface for rust, corrosion resistance and good sealing. Easy to install: You just need to push back the snap ring and insert the pipe connector plug. Be sure to put the snap ring back into the position lock to quickly connect or disconnect the tool and the air line. Wide application: These compressed air quick couplers are widely used in connecting between devices pneumatic tires and air hose. Specification: Production name: compressed air quick connector Material: iron with nickel-plated surface Color: silver Product Description Product: These compressed air quick connectors are widely used in the connection between pneumatic devices and air pipe. With nickel-plated surface, these compressed air quick connectors provide good airtightness , rust-proof and corrosion resistant. Package contents: 2 x SH20 female compressed air quick connector 2 x PH20 male compressed air quick connector Note: 1.Please measure the inner diameter of the connected trachea carefully before paying. 2. Please allow slight errors due to manual measurement. Thank you for your understanding. 3. Monitors are not calibrated same. Item color displayed in photos may be showing slightly different from the actual item. Please take the real one for reference.