Single Variable Flow Kit, 5 x 150mm [Kitagawa TWA Back Catalog number: 800254 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9977-20 Sorbent Tube, XAD-2, 6X110, 120/60, 20/BX Price on request 800063 Tube Holder Housing End, 1/2" for 5mm OD Price on request 800261 Single Tube Holder Kit, 7-10 x 175mm Price on request