Single Variable Flow Kit, 6 x 70mm (Standard Charc Back Catalog number: 800253 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800238 Tube Holder O-Ring Kit Price on request 811-9970-50 Sorbent Tube, Silica (Spec Clean), 7X110, 50/BX Price on request 800062-10 Tube Holder Housing End, 1/2" for 6mm OD (Packg of Price on request