reductor con cabeza hexagonal
/rˌeðuktˈoɾ kon kaβˈeθa ˌeksaɣonˈal/
n
English: hexagon bushing · 六角异径接头
Significado：Fitting with a hexagonal head. It joins two pipes of different diameters: one pipe is screwed onto the male end, and the other into the female end.