A straight adapter joining an AN10 37-degree male flare to an M12*1.5 male metric thread. This is a distinctly reducing combination: the -10 AN side is sized for oil cooler, dry sump and high-volume fuel work, while M12*1.5 is a compact metric port commonly found on European and Japanese housings, banjo bosses and sender locations. Choose it when the hose run needs to be -10 for pressure drop or hose-end availability but the component itself is only tapped M12. The AN flare seals metal-to-metal without sealant; the metric side must be sealed by the washer or O-ring arrangement the port was designed around, not by tape.