The Aeroflow Performance M10 x 1.00mm to -3AN and -4AN is the perfect fitting for the Aeroflow Performance external wastegates. The shorter thread means there is no need to cut down the fitting to fit into the air port for external wastegates with the M10 thread. Made from stainless steel which is designed to withstand the extreme heat and vibration resistant to stop any chance of snapping the fitting.