• Trumpet water key corks.
• 9 mm diameter x 4 mm thickness.
• Silica , solid wood material, anti-, good sealing, wear resistance.
• These water key corks are made to fit trumpets, and can be polished to fit other models as well.
• Water key cork pads suit for trumpet cornet flugelhorn trombone.

20 Pieces Water Key Cork Pads(10 Pack)