Triple Variable Tube Holder Kit, 6 x 70mm Back Catalog number: 800230 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 179S Sensidyne Gas Detector Tubes, Ethyl Benzene (10-500 ppm), pk/10 Price on request 800071-10 Tube Holder Housing End, 5/8", for 1/4" OD, Open End (Packg of 10) Price on request 800136-10 Tube Holder Collar Clip, for 5/8" OD, 1/2" ID Tubing (Packg of 10) Price on request