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 800062 Tube Holder Housing End, 1/2" for 6mm OD Price on request 811-9968-50 Sorbent Tube, Silica Gel, 8X110, 520/360, 50/BX Price on request 800136-10 Tube Holder Collar Clip, for 5/8" OD, 1/2" ID Tubi Price on request