Tube Holder O-Ring Kit Back Catalog number: 800238 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 800258 Single Variable Flow Kit, 7 x 130mm [Dräger Long Price on request 800064 Tube Holder Housing End, 5/8", for 7-10mm Price on request 800253 Single Variable Flow Kit, 6 x 70mm (Standard Charc Price on request