The Messerschmitt Me 210 was a twin-engine, low-wing heavy fighter produced by the German company Messerschmitt in the 1940s and used mainly by the Luftwaffe during World War II. Derived from the earlier Bf 110, although it introduced some interesting technological improvements, it had a long and troubled development phase that failed to solve its initial problems until after a substantial redesign. Although burdened by flight stability problems, it was nevertheless launched into an initial phase of mass production, which was quickly interrupted due to the mistrust expressed by pilots. source wikipedia