This is a set of Jargar Strings cello strings, Classic, medium, A and D strings. Both were only played for about an hour for testing. I gave up using them because they produced a strong wolf tone on my instrument. The A string was purchased from a musical instrument store about a week ago. The D string was obtained new around the same time from here. # Cello # Cello Strings # Jargar # JARGAR STRINGS # Classic # A string # D string # AD