550 Series Cutter One-Piece Full Flow Swivel 150° Hose End -6AN Black Finish. Suits 100 & 450 Series Hose Aeroflow fittings are made from 6061 T-6 aluminium. Aeroflow fittings provide superior thread strength for smooth assembly. These one-piece full flow fittings provide the best flow on the market. Aeroflow's full flow series are a billet CNC machined full flow fitting which provide an uninterrupted flow. With superior wall thickness, full flow series are a must for any serious racer. Double Viton O-ring seals provide leak free performance when used with a wide range of fluids. Aeroflow's corrosion resistant, colour consistent, double anodising and hand polishing adds the final touch of quality and protection you have come to expect from Aeroflow.