Tube Holder Single Variable Flow, only Back Catalog number: 800072 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800066-10 Tube Holder Collar Clip, for 1/4" OD, 1/8" ID Tubi Price on request 800062 Tube Holder Housing End, 1/2" for 6mm OD Price on request 103SD Sulphur Dioxide 1-60 ppm Gas Detector Tube, pk/10 Price on request