These Aquila Thunderguts are made of a polymer, specially designed to sound great and play better than any other bass uke rubber string. This set can be used on our M-Bass and M-Bass Fretless.

• Polymer strings, developed by Aquila for the best performance and tone.
• String Gauges vary depending on tension that the strings are under.

Not sure which M-Bass strings to get? Check out our M-Bass Comparison page