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 connectors are made from high quality iron. Nickel-plated surface for rust, corrosion resistance and good sealing. Easy to install: Simply 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 air line. Wide application: These compressed air quick connectors are widely used in the connection between pneumatic devices and air pipe. Specification: Production name: compressed air quick connector Material: iron with nickel-plated surface Color: silver Product description: These compressed air quick connectors are widely used in the connection between pneumatic devices and air pipe. With a nickel-plated surface, these compressed air quick connectors offer good airtightness, rust-proof and corrosion-resistant. Box contents: 2 x SH20 female compressed air quick connector 2 x PH20 male compressed air quick connector Note: 1.Please carefully measure the inner diameter of the connected trachea before paying. 2. Please allow slight errors due to manual measurement. Thank you for your understanding. 3. Monitors are not calibrated the same. Item color displayed in photos may be showing slightly different from the actual item. Please take the real one for reference.