UKULELE PREMIUM STRINGS Newly developed ukulele premium strings from Martin. Made with Graphite Grey Polygut™, they provide accurate intonation and a clear, balanced tone with excellent sustain. These PREMIUM series strings are standard on Nazareth-made ukuleles. Martin & Co. ukulele strings M610 with a clear, balanced tone. 3 sets for C tuning. - Brand: Martin & Co. - Model: M610 - Gauge: Concert - Number of sets: 3 sets - Tuning: C tuning - Features: Clear, balanced tone, excellent sustain and volume Thank you for viewing.