Use This Fitting To Split One 1/4 NPT Port, Such As Found On An ARB Compressor, Tank, Or Manifold Kit, Into Two. This Fitting Is Particularly Useful For Gaining A 1/4 NPT Outlet On An ARB Compressor While Allowing Continued Use Of The Supplied Pressure Switch. ARB Air Line Adapter Fitting; 3 Way 1/4 in. NPT; Tee Piece w/One Male; Two Female Ports; Spanner Size 19mm; Nickel Plated Brass; 2 Pack;