Tube Holder Housing End, 1/2" for 5mm OD Back Catalog number: 800063 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9974-50 Sorbent Tube, XAD-2, 8X110, 150/75, 50/BX Price on request 800149 Single Tube Holder Kit, 6 x 70mm (Standard Charcoa Price on request 811-9981-50 Sorbent Tube, Porapak-N, 6X70, 88/44, 50/BX Price on request