A good quality and all-encompassing maintenance, care and cleaning kit for trombone, including everything you need to keep your trombone in good shape. Included in the HE110 kit are a flexible brush, polish cloth, trombone mouthpiece brush, slide oil and care instructions. Also included are the attractively-named spitballs. These are small cleaning discs of specially moist foam, which you blow through your trombone for instantaneous cleaning.