Choice of narrow, wide or highspeed flyers to fit all Louet spinning wheels. All flyers come standard with a 1/2" (13mm) orifice with the exception of the high speed flyer, which comes with a 3/8" (10mm) orifice. The wide flyer is designed for use with the bulky bobbin. The high speed flyer is perfect for fine spinning and comes standard with a sliding hook and guide ring rather than the traditional hooks. Save a few dollars by purchasing the "Highspeed Spinning Set" if you're interested in the high speed flyer!