K3 rotary instruments are available in a variety of sizes, lengths and tapers (see popup pictures for details). The picture in the main window above shows a G Pack set (Greater/Graduate Taper). The taper is shown by the color of the silicone stopper and a color ring in the metal handle, the size of the tip is indicate by the other ring color in the handle. K3 files are produced in lengths of 17 mm - 30 mm, depending on the taper and size of the tip.