Tube Holder Single Variable Flow, only Back Catalog number: 800072 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 200505 Tubing, 1/8" ID x 1/16" W, Clear PVC, (3 ft) Price on request 800149 Single Tube Holder Kit, 6 x 70mm (Standard Charcoa Price on request 800074 Tube Holder Triple Variable Flow, only Price on request