Be prepared for any practice, performance, or impromptu jam session with help amazonbasics ukulele strings. Designed to fit 21- to 26-inch ukuleles, the strings make a great choice when needing to routinely change the strings on an instrument for a full set of new ones or when needing a quick replacement for a broken string on stage.specifically designed for ukuleles, the strings are made of modified nylon and silver-plated copper winding. They reach stable tuning quickly and deliver a warm, rich sound with a bright tone.the ukulele strings include an anti-rust coating for added protection and longer lasting strength.