Brakequip Fitting - FemaleM10X1 X 5/8NF (DPS) EXT. THRD.

The external thread designation means the fitting carries threads on the outside rather than internally, so it screws into a receiving port or nut rather than accepting a male end inside itself. The M10X1 side handles the metric connection while the 5/8NF side takes care of the national fine thread end, so you're bridging two different thread standards in one piece. Both ends are accounted for in the part design, and that external thread configuration is built right into how Brakequip made this one to seat properly in brake line assemblies.

This Brakequip fitting is designed for a female M10X1 to 5/8NF connection, so it should work with any brake lines that match those specifications. Make sure the threads are compatible.