Tube Holder Triple Variable Flow, only Back Catalog number: 800074 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9902-50 Charcoal Tube, Coconut Shell, Large, 200/400mg, 8x Price on request 800136-10 Tube Holder Collar Clip, for 5/8" OD, 1/2" ID Tubi Price on request 811-9964-50 Sorbent Tube, Microlite, 8X110, 500mg, 50/BX Price on request