Tube Holder Kit, Quad Variable, 6 x 70mm Back Catalog number: 800231 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 811-9903-50 Charcoal Tube, Coconut Shell, Jumbo, 200/800mg, 10x110mm, with end caps, 50Pack Price on request 800062 Tube Holder Housing End, 1/2" for 6mm OD Price on request