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 800231 Tube Holder Kit, Quad Variable, 6 x 70mm Price on request 800062 Tube Holder Housing End, 1/2" for 6mm OD Price on request 811-9969-20 Sorbent Tube, Silica, DNPH, 6X110, 300/150, 20/BX Price on request