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 400253 Tube Holder, Clear Storage Box Price on request 800238 Tube Holder O-Ring Kit Price on request 200486 Tube Holder Tubing, 1/4" ID x 1/16" W (10 ft) Price on request