5 Piece Quick Coupler Compressor Starter Set Heavy duty zinc-plated steel and brass construction for corrosion resistance and longer life Includes (1) 1/4" female Industrial style quick coupler, (1) 1/4" female Industrial style plug Includes (2) 1/4" male Industrial style plugs and (1) brass male connector Industrial series connectors Universal fit for all 1/4" NPT tools