Tube Holder Kit, Dual Variable Manifold (Includes Back Catalog number: 800251 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800259 Single Tube Holder Kit, 7-10 x 110mm Price on request 800263 Single Tube Holder Kit, 5 x 150mm [Kitagawa TWA Tu Price on request 811-9978-20 Sorbent Tube, XAD-2, 8X110, 450/225, 20/BX Price on request