Tube Holder Housing, 6x70mm, 1/2" OD, S225 Back Catalog number: 200102 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 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 F-PRO-1218 Universal Tube Holder System - Instruction Manual Price on request