Tube Holder Collar Clip, for 5/8" OD, 1/2" ID Tubi Back Catalog number: 800136 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9971-50 Sorbent Tube, Silica (H2SO2), 6X70, 150/75, 50/BX Price on request 800259 Single Tube Holder Kit, 7-10 x 110mm Price on request 800063-10 Tube Holder Housing End, 1/2" for 5mm OD (Packg of Price on request