Tube Holder Housing End, 1/2" for 6mm OD Back Catalog number: 800062 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800139 Tube Holder Adapter for 1/2" Ends Price on request 800261 Single Tube Holder Kit, 7-10 x 175mm Price on request 400253 Tube Holder, Clear Storage Box Price on request