【1/4 Inch】1/4" NPT threaded end. Suitable for M-Style(Type D) couplers, compatiable with most air hoses or air tools. 【360° Rotatable】The ball structure inside allows it to rotate 360 degrees, preventing hose kinks and increasing mobility, great for air tools to reduce strain on wrist and air hose. 【Quick Connector】Quickly and safely connect and disconnect system, optimal sealing and high efficiency. 【Widely Used】These industrial plugs are great for professional jobsites, in automotive shops or at home in the garage for air hose, air compressor, air tools, air nailer, air blow gun, pressure washer. 【Sturdy Durable】Strong and not easily corroded, can keep tools work safely at high temperatures and pressures, suitable for long time use. Operating temperature range is -40 to +250℉(-40 to +121℃). Working pressure of 300PSI. 6PCS 1/4 Inch NPT Male & Female Industrial Swivel Air Plug, Steel Chrome Plating 360 Degrees Hose Quick Connect, Air Compressor Pneumatic Coupler Fitting Adapter