If your looking to covert your stock hard line to use AN fittings & hose then this is the fitting you need. Unlike the other hard line adapters in the market, ours is rated to 300psi. Simply cut your steel hard line using a plumbing pipe cutter, insert socket, then ferrule, and last tighten the male fitting to the socket. No flaring need.
Works with hard lines with a diameter of 8mm or 5/16".