***TRADED*** Just bought a Martin B-1 that had these on it. No issues, just seemed a shame to throw them out. Assuming they are Fender due to the black thread at both ends. Set-up for 2 + 2 headstock, but plenty of slack, as the wrapped each one around the peg 5 or 6 times!!! Trade for a pack of PhospherBronze AEB strings (light gauge) or Slinkys, or 12AX7 tubes or whatever you got.