Check the listing for details. StewMac Cryowire Fretwire, Medium/Medium, 2-foot piece. Condition: New. Listed at 14.85 USD. Cryowire: Tougher frets without the stress Frets that last longer and play better, without extra work. There have been many advances in fretwire over the last decade, but new materials have been tougher to work with, wear tools faster, or don't have the traditional look you and your customers want. We wanted to see how we could make traditional fret material better. We found that cryogenic, or deep freezing treatment, has been used in countless industries to make metal parts tougher and more durable. Medium/High, 2-foot pieceThe Most Popular Wire for Refretting and Compatible With Martin, Fender, Guild, Gibson, and Other GuitarsFor Acoustic Or Electric GuitarCryowire Frets last longer and play better, without extra workBuilt To Last A Lifetime - Our Promise To You Is Simple, If Any Of Our Products Ever Wear Out, Break, Or Fail To Meet Your Every Expectation, Simply Return It For A Replacement.