Tube Holder Dual Variable Flow, only Back Catalog number: 800073 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 200484 Tubing, 1/4" ID x 1/16" W (3 ft), Clear Vinyl, Gil Price on request 800262 Single Tube Holder Kit, 7 x 130mm [Draeger Long T Price on request 800165 Sorbent tube adapter nipple for Dual manifold High Price on request