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Explanation: This is taken from a rather accurate and comprehensive technical online dictionary. See website below.
Langenscheidt's Kompakt Maschinenbau translates "Profil" with "Section" and "Abschluss" with "end cover"
Explanation: See the reference for a picture of one, albeit on a piece of gymnastics apparatus. The subject area isn't (IMHO) significant, though, as the term works for many kinds of terminating pieces; there are also several hundred other Google hits for "finishing strip" in numerous different contexts.