Various files - all of fine grit used for light touch and/or finishing work. The green file has a loop of sandpaper on it - you can rotate the loop as the sandpaper becomes worn; the grey/white file is soft and extra-fine for finish work; the large flat stone is actually a sharpening stone that has a very fine finish and is useful for using over an area of more than 1 or 2 frets. The file with the orange handle is a fret-crowning file. On each side is a rounded file - one for medium and one for jumbo frets (other sizes are available).