Package includes: There are 4 pieces 2 types of male\ or female compressed air quick connect, 2 dinary SH20 2 dinary PH20. High quality material: These compressed air quick connects are made from high quality iron. Nickel-plated surface f rust, crosion resistance good sealing. Easy to install: Simply push back the snap ring insert the pipe connect plug. Be sure to put the snap ring back into the position lock to quickly connect disconnect the tool air line. Wide application: These compressed air quick connects are widely used in the connection between pneumatic devices air pipe. Specification: Production name: compressed air quick connect Material: iron with nickel-plated surface Col: silver Product description: These compressed air quick connects are widely used in the connection between pneumatic devices air pipe. With a nickel-plated surface, these compressed air quick connects offer good airtightness, rust-proof crosion-resistant. Box contents: 2 x SH20 female compressed air quick connect 2 x PH20 male compressed air quick connect Note: 1.Please carefully measure the inner diameter of the connected trachea befe paying. 2. Please allow slight errs due to manual measurement. Thank you f your understing. 3. Monits are not calibrated the same. Item col displayed in photos may be showing slightly different from the actual item. Please take the real one f reference.