GC and GCMS ECD Double Filter Installation Kit w/ Electronic Inidcator. Includes (1) 2 position base plate with 1/8” Stainless Steel inlet fittings and M Type outlet fittings, (1) Oxygen/Moisture/Hydrocarbon Helium-specific Trap, (1) oxygen/moisture Trap, (1) Electronic Indicator Device and (1) Universal Ring Nut Mounting Clip