Tube Holder Kit, Quad Variable (Includes 6x70mm, 7 Back Catalog number: 800249 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9972-50 Sorbent Tube, TenaX, 8X110, 100/50, 50/BX Price on request 200157 U-Tube replacement for P/N 800143 Price on request 800062-10 Tube Holder Housing End, 1/2" for 6mm OD (Packg of Price on request