The Roosebeck Dulcinet 4 String Set contains 3 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 loop ends. The unwound first or G course has double strings tuned in unison. Tuning and String Gauges 1:G .009 .229 Steel 2:G .009 .229 Steel 3:D .012 .300 Steel 4:G .018w .460 Nickel