Tuerca ósea inferior curva de 12" radio 43 mm para Fender Strat Tele Player Plus, etc.
That could depend on your guitar or your preference. Guitar specs usually include nut width (see Fender website for example). Many Fenders, Squire, and other Fender style guitars spec 42mm nut. Approximate height: Low E: 5.0mm, High E: 4.5mm.