Aeroflow's 550 Series cutter fittings are a CNC machined one piece fitting which provide uninterrupted flow. The billet cutter end separates the wire braid for maximum hose retention, sealing the hose for a second time which provides a greater sealing area for strength and easier assembly. The tight mandrel bent radius body has superior wall thickness and a swivel head allowing for easy adjustment. Aeroflow's 550 series fittings are the choice of professionals for use in fuel systems, cooling systems, vacuum applications and oil systems. Compatible hose: 100 Series Stainless Steel braid and 450 Series Lightweight Nylon braid.