Description: This is a handy set of 13 round files( for the depth of string slots) and 1 x flat file( for the height of nut and bridge). Absolutely perfect for filing string slots into nuts and bridges for Acoustic Electric guitars. Suitable for guitar Nut / Bridge Slots, almost suitable for strings any specification between 008-058 corresponding of the string slots. The round files are not very sharp, need a little long time to file, but the string slots will be very smooth, there will be no noise and no uneven vibration. Material: Stainless steel Size Chart: Stainless Steel Box: Approx.7.5*2.8cm/2.95*1.1inch Round File Length: Approx.6.5/2.56inch Flat File Length: Approx.6.5/2.56inch Package Includes: 1 Set Guitar Nut/Bridge File Note: The color might be slight different from the picture due to some factors, such as lighting effect. Please allow slight deviation of measurement for manual measure