Tube Holder Kit, Dual Variable Manifold (Includes Back Catalog number: 800251 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 800073 Tube Holder Dual Variable Flow, only Price on request 811-9972-50 Sorbent Tube, TenaX, 8X110, 100/50, 50/BX Price on request