Tube Holder Housing End, 5/8", for 1/4" OD, Open E Back Catalog number: 800071 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800251 Tube Holder Kit, Dual Variable Manifold (Includes Price on request 800063 Tube Holder Housing End, 1/2" for 5mm OD Price on request 800253 Single Variable Flow Kit, 6 x 70mm (Standard Charc Price on request