Tube Holder Dual Variable Flow, only Back Catalog number: 800073 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800136 Tube Holder Collar Clip, for 5/8" OD, 1/2" ID Tubing Price on request 800066 Tube Holder Collar Clip, for 1/4" OD, 1/8" ID Tubing Price on request 143SA Xylene (5-1000 ppm) Gas detector tubes, pk/10 Price on request