Tube Holder Single Variable Flow, only Back Catalog number: 800072 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended F-PRO-1218 Universal Tube Holder System - Instruction Manual Price on request 143SA Xylene (5-1000 ppm) Gas detector tubes, pk/10 Price on request 800170 Tube Holder Hose Barb Fitting Price on request