Tube Holder Housing End, 5/8", for 1/4" OD, Open E Back Catalog number: 800071 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9978-20 Sorbent Tube, XAD-2, 8X110, 450/225, 20/BX Price on request 800253 Single Variable Flow Kit, 6 x 70mm (Standard Charc Price on request 800062-10 Tube Holder Housing End, 1/2" for 6mm OD (Packg of Price on request