Filter (25/37mm) cassette holder, for 2- and 3-part cassettes

Accommodates two or three-part 37mm cassettes with or without a cyclone, 25mm cassette with cowl, or DPM cassette with a GS-1 Cyclone; clips to a worker's collar. Includes 3 feet of 1/4 inch ID Tygon tubing and 25mm adapter ring.