Tube Holder Housing End, 1/2" for 5mm OD Back Catalog number: 800063 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800238 Tube Holder O-Ring Kit Price on request 800262 Single Tube Holder Kit, 7 x 130mm [Draeger Long Term Tubes] Price on request 400253 Tube Holder, Clear Storage Box Price on request