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 800238 Tube Holder O-Ring Kit Price on request 800253 Single Variable Flow Kit, 6 x 70mm (Standard Charc Price on request 811-9984-50 Sorbent Tube, Porapak-R 6X70, 70/35, 50/BX Price on request