MusicNomad’s new Safe Zone S-File takes fret crowning to the next level. The new fret crowning file prevents users from overfiling and provides them with the perfect fret shape. The unit’s exclusive design features a Safe Zone innovation with no diamond grit at the top of the arch of the channel, eliminating overfiling. The S-File reduces the fret crowning learning curve from weeks to hours. The 240 diamond grit combined with the ideal filing radius design gives users the perfect cut every time. The blue silicone comfort grip reduces hand fatigue, and the unit’s offset design provides both added leverage when filing and lets users clear the guitar body when filing over it.