Tube Holder Housing End, 5/8", for 1/4" OD, Open E Back Catalog number: 800071 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 800062 Tube Holder Housing End, 1/2" for 6mm OD Price on request 200113 Tube Holder Housing, 7-10 x 110mm, 5/8", L240 Price on request