Another 13++ Nut For Electric Guitar. Electric guitar saddles, on the other hand, are most often integrated into a metal bridge and feature independent height/length adjustments for greater player customization. String slots in a nut without a zero fret must be cut to the proper depth to make string height correct. A wide variety of electric guitar nuts options are available to you, such as iso. Strings that are too low at the nut can buzz against the this is especially evident on the first few frets of an electric guitar.