CNC machined aircraft aluminum flange fitting. Bolts to Mazdaspeed3 engine side to connect -10 braided return line. 2 bolt flange bolts to oil return port on Mazdaspeed 3 engine block. Out of the flange is an integrated -10 AN/JIC flare male. Use with 12" straight -10 steel braided line if using ATP turbo on stock manifold for proper line length.