Tube Holder Housing, 7-10 x 150mm, 5/8", L255 Back Catalog number: 200112 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 400253 Tube Holder, Clear Storage Box Price on request 800262 Single Tube Holder Kit, 7 x 130mm [Draeger Long Term Tubes] Price on request 106SC Carbon Monoxide 1-50 ppm Gas Detector Tube, pk/10 Price on request