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 811-9977-20 Sorbent Tube, XAD-2, 6X110, 120/60, 20/BX Price on request 200157 U-Tube replacement for P/N 800143 Price on request 800062-10 Tube Holder Housing End, 1/2" for 6mm OD (Packg of Price on request