3 pieces WOOD COMB FILE Cleaner for Hering/HOHNER MARINE BAND HARMONICA Super 64 260 270 280, Chromonika I II III No Comb. These files are double sided with a flat surface and designed to clean the wood comb when you do the repairs/maintenance/refurbish. For the health of a player, the harmonica should be cleaned every 6 months or a year. Use the brush first then file it. This one will be a really useful tool as the green or black things are gone and the original color of the wood will come back. These files are cuttable so that you could cut it to smaller pieces for the smaller places to use.