Tube Holder Housing, 6x70mm, 1/2" OD, S225 (Packg Back Catalog number: 200102-10 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 200104 Tube Holder Housing, 5 x 150mm, 1/2", S255 [Kitaga Price on request 800142-10 Tube Holder Collar Clip, for 3/8" OD, 1/4" ID Tubi Price on request 106SC Carbon Monoxide 1-50 ppm Gas Detector Tube, pk/10 Price on request