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 200102-10 Tube Holder Housing, 6x70mm, 1/2" OD, S225 (Packg Price on request 811-9973-50 Sorbent Tube, XAD-2, 8X110, 100/50, 50/BX Price on request 800063-10 Tube Holder Housing End, 1/2" for 5mm OD (Packg of Price on request