1 Set QA140 Medium Acoustic Guitar Strings & 1 Set VX120 Bass Strings Vigorous Tone Strings  High Quality QA Series Medium Super Light Extra Light Acoustic Guitar Strings 85/15 Bronze Color End-Ball  In order to maintain excellent hand feeling,the series string winding part selects 85/15 high-quality copper alloy.  The alloy surface through multi-processing, string durablity, high Gloss, clear timbre,  suitable to both guitar lover and professional stage performance. This guitar string will make your acoustic guitar more excellent performance    colour: picture color  guitar Strings:  Type: Strings  Model Number: QA Series  Inner Package: Sealed Vacuum Bag  Cover: 85/15 Bronze  Core: Six Angle Steel Core  Six Angle Steel Core  Model - Note - E - B - G - D - A - E  QA140 - Inch - 9 - 12 - 15 - 25 - 35 - 45  Super Light - mm - 0.23 - 0.3 - 0.38 - 0.64 - 0.89 - 1.14  Material: 90/10 Bronze  size: 14.5 x 10.8 x 1 cm   bass Strings:  Tone color is thick.Strong durability.  The surface of the alloy is multilayered.Long time is not oxidized.  Suitable for senior guitarists.  Adopt medium carbon steel hexagon core and full automatic winding technology, smoother and softer.  The nickel-alloy material makes the sound more plump and rich.  Model: VX120  Inner Material: Hexagonal Core  External Material: 10 % nickel alloy wire  Size:  G: 040 inch / 1.02 mm  D: 060 inch / 1.52 mm  A: 080 inch / 2.03 mm  E: 100 inch / 2.54 mm  Material: Hexagonal Metal Core  Product packaging size: 18 x 15 x 1cm    Package Contents:  1 * guitar Strings (6pcs/set)  1 * bass Strings (4pcs/set)    Only the above package content, other products are not included.  Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.