Carbon Monoxide 1-50 ppm Gas Detector Tube, pk/10 Back Catalog number: 106SC Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800073 Tube Holder Dual Variable Flow, only Price on request 200113-10 Tube Holder Housing, 7-10 x 110mm, 5/8", L240 (pkg of 10) Price on request 200115-10 Tube Holder Housing, 7 x 130mm, 5/8", L247 (pkg of 10) Price on request