The Roosebeck Dulcimer 5 String Set contains 4 plain steel strings and one nickel plated steel wound on steel string. The strings are designed to provide a bright, rich tone. All of the strings have ball ends. The first and second (unwound A and D) courses have double strings tuned in unison. Tuning and String Gauges 1:D.012.300Steel 2:D.012.300Steel 3:A.014.360Steel 4:A.014.360Steel 5:D.022w.560Nickel