Aeroflow's 570 Series PTFE fittings are a CNC machined one piece fitting which provides uninterrupted flow. The purpose designed olive compresses into the PTFE (Teflon®) inner tube for easy, leak free assembly. The mandrel bent tight radius body has superior wall thickness and a swivel head allowing for easy adjustment. Aeroflow's 570 series fittings are the choice of professionals for use in power steering, automatic transmission, nitrous, fuel systems, cooling systems, vacuum applications, oil systems, brake and clutch lines. Compatible Hose: 200 Series Stainless Steel braid and 250 Series Nylon braid PTFE (Teflon®) hose.Note: We recommend 200 or 250 series hose in E85 applications. Hose ends are hard anodised (excluding Silver finish).