The BSWKIT will give your Nashville bridge equipped guitar the "vintage" look, while, at the same time, enhancing your tone with steel posts that provide more mass than the original zinc inserts. Combined with one of our Faber ABR-59 bridges (not included), this is the HOT bridge setup for your guitar! Comes with one pair STEEL studs, pair of separate thumbwheels and two 4MM nuts for installation. Available in gloss nickel, aged nickel, gloss gold or aged gold. Not for original or reissue ABR-1 bridges. Please review the Faber® Guitar Parts F.A.Q. to see which product is right for your guitar.