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 811-9976-20 Sorbent Tube, XAD-2, 6X110, 150/75, 20/BX Price on request 800259 Single Tube Holder Kit, 7-10 x 110mm Price on request 800260 Single Tube Holder Kit, 7-10 x 150mm Price on request