This is a set of 3 strings specifically for a 3-string cigar box guitar (CBG) that you want to tune in an "Open G" (GBD) or "standard guitar" (GBE - the three highest-pitch strings of a standard 6-string guitar) tuning. Open G is a great setup for slide (fretless) playing, and the standard guitar tuning is great for a fretted instrument - you can play the "top" portion of most guitar chords with just a couple of fingers! These are lighter-gauge strings, better for instruments that arent going to be played as heavily - or those that dont have strong, reinforced necks! String Specs: #1 - .022" Bronze Wound #2 - .014" Plain Steel #3 - .010" Plain Steel For best results with reaching the desired tuning, these should be used on a CBG that has a scale length (the length from the nut to the bridge) in the 24-26" range. Much longer or shorter than that and the strings will either be too loose and sloppy, or so tight that they break before they reach the pitch. This string set is formulated based on our own experimentation and what has worked on our own guitars. If you want to hand-pick specific strings in specific sizes, this may not be the pack for you. But if you are not sure exactly what you need and want a set of inexpensive strings that should work just fine for your build, this is the ticket.