Triple Variable Tube Holder Kit, 6 x 70mm Back Catalog number: 800230 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 124SA Sensidyne Gas Detector Tubes, Toluene (10-500 ppm), pk/10 Price on request 400253 Tube Holder, Clear Storage Box Price on request 800135 Tube Holder Collar Clip, for 1/2" OD, 3/8" ID Tubing Price on request