Seal tape is needed when using. 2 Packs 1/4 NPT -Style Quick Connect Air Hose Fittings, High Flow... Joroy 1/4 Air Hose Fittings, Industrial M-Type Coupler, 1/4 Inch Flow Size, 1/4 Inch Female Threads Size, Steel Material, 300PSI, 10 Pieces Air Compressor Accessories Set 1) Prevost, 1/4, Industrial, IRC Regular Coupler/Compressed Air Fitting and (2) 1/4 Male High Pressure Air Fittings 1/4 Air Hose Fittings, Industrial M-Type Coupler, Pakistan 1/4 Inch Industrial M Type Air Coupler Fitting Steel 300 PSI 10PCS 1/4 Inch Industrial M-Type coupler with 1/4 Inch female threads size in one box, 300PSI of Max working pressure, steel material. 1/4 Inch Female Threads Size: This coupler is used to connect components to an air compressor stuff, 1/4 Inch NPT threads size compatible with most air tools 1/4 Inch Female Threads Size: This coupler is used to connect components to an air compressor stuff, 1/4 Inch NPT threads size compatible with most air tools. 1/4 Inch Body Size: 1/4 Inch Body air hose fittings provides 35 SCFM at 100PSI working pressure, which meet the needs of the most air compressor stuff or accessories.