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 800074 Tube Holder Triple Variable Flow, only Price on request 811-9963-50 Sorbent Tube, Microlite, 6X70, 200mg, 50/BX Price on request 800071 Tube Holder Housing End, 5/8", for 1/4" OD, Open E Price on request