AN -3 (3.17mm 1/8" I.D ) PTFE Core Stainless Steel Braided White PVC Coated Hose. This stainless steel braided hose consists of a PTFE extruded core with a heavy duty, protective, full stainless steel (grade 304) braid and then on the outside a PVC smoked translucent coating, making it exceptionally lightweight, flexible, and durable.