Package Contents: The Air Couplers and Air Plugs Kit Included 6pcs 1/4 MNPT Plug, 4pcs FNPT Plugs, 1pc MNPT Couplers, 1pc FNPT Couplers, Which Almost Meet your Daily Needs.

High Quality: Air Plugs Kit Made of Solid Brass to Protect the Industrial Air Fittings Against Abrasion, Corrosion, Scratches, with Extremely Strong and Pressure-Resistant, with Anti-Rust and Anti-Corrosion Properties, Longer Service Life.

Standard Design: The Fitting is Designed with Four Large Locking Balls for Fixing and Locking the Plug to Ensure a Reliable Connection, the Maximum Pressure of the Air Fitting and Plug is 300psi, the Basic Body Size is 1/4 inch.

Quick Connection: Easy to Install and Quick Disconnect, Interchangeable / Compatible with Most Manufacturers' Coupler Plugs, Preventing Air Leaks and Costly Replacements.