Our new TonePros ?F6? are designed for the ?6 in line? format. These tuners are designed with classic features but with performance in mind. ?F6? Series tuners pay critical attention to the all important ?winding height?, which is necessary for the ?split/top load? design of yesteryear?s 6 on a side tuners. ?F6? features the same hi performance machine gears of the other “6” Series tuners, including the extremely tight, 15:1 high gear ratio. Special ?clipped? 7 screw set based plates are included for classic ?vintage? appearance, and classic matching finish metal buttons are standard for this model.