Hosco® gauged nut files allow you to be able to work on a range of guitar, ukulele, mandolin or banjo nuts.  Supplied in the most common gauges for these kinds of instruments. Their rounded profile allows the string to seat properly on the slot bottom avoiding buzzing and rattling. The 11 different gauges are: .010/.013/.016/.024/.028/.032/.036/.042/.046/.050/.056. Great for any shop or hobbyist!!