Single Tube Holder Kit, 5 x 150mm [Kitagawa TWA Tu Back Catalog number: 800263 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9968-50 Sorbent Tube, Silica Gel, 8X110, 520/360, 50/BX Price on request 800063 Tube Holder Housing End, 1/2" for 5mm OD Price on request 800136 Tube Holder Collar Clip, for 5/8" OD, 1/2" ID Tubi Price on request