Tube Holder Collar Clip, for 1/2" OD, 3/8" ID Tubi Back Catalog number: 800135 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9973-50 Sorbent Tube, XAD-2, 8X110, 100/50, 50/BX Price on request 800261 Single Tube Holder Kit, 7-10 x 175mm Price on request 800134-10 Tube Holder Collar Clip, for 7/16" OD, 5/16" ID Tu Price on request