Aeroflow's male adapter cutter style hose ends are designed to allow the hose end to be threaded directly into a female port without the extra cost and complication of an adapter fitting. The Aerospace triple seal/double o-ring are made from 6061-T6 aluminium. This design ensures a secure, leak free connection every time. Aeroflow's 550 series are CNC'd with superior wall thickness, a must for any serious racer. Aeroflow's corrosion resistant, colour consistent, hard anodised (excluding silver) and hand polishing adds the final touch of quality and protection you have come to expect from Aeroflow.