PowRyte Basic 3/8-Inch Industrial Quick Coupler Plug Set - 1/4-Inch NPT Male Thread, 2-Pack Chrome plated steel construction is durable and resistant to corrosion 3/8-Inch industrial interchange plug for quick-disconnect couplings for hoses and pneumatic tools 1/4-Inch male NPT threaded end for connecting air hoses or air tools with a female 1/4 inch NPT threaded end 2-Pack