Power Groove 10-46 Pure Nickel Electric Guitar Strings Light Gauge SIT's Power Groove Pure Nickel Wound PN-1046 electric guitar strings are a light gauge string set, with a clear and strong voice. They are made with a pure nickel cover wrap over a hard tempered hex steel core wire. The soft nickel alloy, round wrap produces gives these strings a great feel, true intonation, and a warm vintage tone. Nickel alloy windings have a unique magnetic signature, that comes across with deep and warm bass tone, while the bare treble strings produce clear and bright tones. This light gauge string set is easy to bend and twang, and also lets you play smooth sounding chords for rhythm, with a little more volume and a more positive feel and response than lighter strings. They are a great all purpose string, thanks to the pure nickel wrap String diameters: .010 .013 .017 .026 .036 .046 inches, bare 3rd string SIT stands for "Stay-In-Tune". The S. I. T. String Corp. is not a traditional guitar string company, but has broken the mold with their innovations and commitment to quality. They are a leading exporter of guitar strings, to a growing foreign market who wants quality US made guitar and bass strings. PN-1046s are so reliable that the S. I. T. String Corp. guarantees them to Stay-In-Tune. In fact, they say "If nothing is causing slippage on your instrument, the S. I. T. String Corp. guarantees your strings to Stay-In-Tune and provide unsurpassed brilliance and bendability." They even provide string installation instructions on the back of the box. So, if you're a "tone freak", then you can rest assured your SIT's won't let you down. Tune up and enjoy.