These water key corks are made to fit all Bach model trumpets and coronets, but can be trimmed to fit other models as well. Comes in a pack of one dozen.
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Comments about Bach Trumpet Water Key Corks:
These corks are very good quality but will not fit all trumpets.They obviously will fit Bach horns but I was unable to make them fit my vintage Conn Connstellation. I tried to file them down to fit but was unable to reduce them to the correct shape without destroying them.