Features:- 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: VX130Inner Material: Hexagonal CoreExternal Material: 10 % nickel alloy wireColor: As picture showsSize:- G: 040 inch / 1.02 mm - D: 060 inch / 1.52 mm - A: 080 inch / 2.03 mm - E: 100 inch / 2.54 mm- B: 120 inch / 3.05 mmPackage Weight : 135 G / 4.76 OuncesPackage Dimensions (L*W*H) : 175*150*5 MM / 6.89*5.91*0.20 InchesRetail Packaging: No, No PackingPackage Include:1 x 5pcs/set Guitar Strings