Tube Holder Housing, 6x70mm, 1/2" OD, S225 Back Catalog number: 200102 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 801935 Charcoal Tube, Coconut Shell, Standard, 50/100mg, Price on request 800072 Tube Holder Single Variable Flow, only Price on request 200486 Tube Holder Tubing, 1/4" ID x 1/16" W (10 ft) Price on request