Is it der, die or das Locher?

Declension

How to use “Locher” in each case

• Nominative — the subject of the sentence: who or what is doing something.

  der Locher · ein Locher

• Accusative — the direct object (whom or what?), and always after für, durch, gegen, ohne and um.

  den Locher · einen Locher · für den Locher

• Dative — the indirect object (to or for whom?), and always after mit, nach, aus, zu, von and bei.

  dem Locher · einem Locher · mit dem Locher

• Genitive — possession (whose?), and after wegen, trotz and während.

  des Lochers · eines Lochers · wegen des Lochers

In the plural it is die Locher in the nominative and accusative, den Lochern in the dative and der Locher in the genitive. There is no indefinite article in the plural.