GHS Strings PF270 Bright Bronze Mandolin Strings, Medium (.011-.040) Model: PF270 Featuring NitroPack singles, guaranteed fresh from the factory! Breathe life into an overly mellow mandolin! 80/20 Copper-Zinc Alloy for a Bright Tone with Loop Ends Medium Gauge: 011 (2) - 016 (2) - 026 (2) - 040 (2)