Single Tube Holder Kit, 7-10 x 175mm Back Catalog number: 800261 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800263 Single Tube Holder Kit, 5 x 150mm [Kitagawa TWA Tu Price on request 800066 Tube Holder Collar Clip, for 1/4" OD, 1/8" ID Tubi Price on request 106SC Carbon Monoxide 1-50 ppm Gas Detector Tube, pk/10 Price on request