http://www.guitar-parts-depot.com/guitar-fret-wires.html
guitars, earnie ball,gibson montana,ovation guitars, tom andersen, prs, taylor guitars, in spain keller, esteve, perez, alhambra. in general mainly the head (crown) size is used to specify for which guitar it is used: .for sizes of more than . mm crown width we say it is used for jumbo, e-bass and e-guitar...