Tube Holder Collar Clip, for 1/2" OD, 3/8" ID Tubi Back Catalog number: 800135 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 103SD Sulphur Dioxide 1-60 ppm Gas Detector Tube, pk/10 Price on request 200131 Impinger Holder, Double, Aluminum, GilAir/HFS Price on request 200157 U-Tube replacement for P/N 800143 Price on request