Semi-Flat pure nickel wound long scale. Flatter than half flat, but not quite as flat as a pure flatwound. Smooth to the touch, but still good intonation. Great for use with fretless basses.

PF-45100L - LIGHT	.045PF	.065	.080	.100
PF-50105L - MEDIUM	.050PF	.070	.085	.105