12 Piece Blow Gun Kit with Couplers and Plugs Milton M-Style Exelair EX0312BKITExelair by Milton 12 Piece M Style Coupler and Plug Kit The Exelair 12 piece blow gun kit is an ideal addition to any air compressor. This kit features a blowgun with a max working pressure of 150 PSI, ball foot air chuck, 1 4" NPT (F M) couplers, 1 4" NPT (M F) plugs, safety adapter, inflation nozzles, rubber tip, safety nozzle, tapered nozzle, and a ball foot air chuck. This kit makes a great do it all blow gun kit for anyone just starting to build