Tube Holder O-Ring Kit Back Catalog number: 800238 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 200187 Tube Holder Adapter, 3/16" to 1/4" Ends Price on request 800074 Tube Holder Triple Variable Flow, only Price on request 800231 Tube Holder Kit, Quad Variable, 6 x 70mm Price on request