Tube Holder Kit, Quad Variable (Includes 6x70mm, 7 Back Catalog number: 800249 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9969-100 Sorbent Tube, Silica, DNPH, 6X110, 300/150, 100/BX Price on request 800062 Tube Holder Housing End, 1/2" for 6mm OD Price on request 800170-10 Tube Holder Hose Barb Fitting (Packg of 10) Price on request