Features:- Tone color is thick.- Strong durability.- The surface of the alloy is multilayered.- Long time is not oxidized.- Suitable for senior guitarists.- Adopt hexagon alloy and full automatic winding technology, smoother and softer.- The phosphor bronze material makes the sound more plump and rich.Model: QA140Inner Material: Hexagonal alloyExternal Material: 85/15 phosphor bronzeColor: As picture showsSize:- E: 009 inch / 0.23 mm - B: 012 inch / 0.30 mm - G: 015 inch / 0.38 mm - D: 025 inch / 0.64 mm - A: 035 inch / 0.89 mm - E: 045 inch / 1.14 mmPackage Weight : 28 G / 0.99 OuncesPackage Dimensions (L*W*H) : 115*105*5 MM / 4.53*4.13*0.20 InchesRetail Packaging: Yes, General BoxPackage Include:1 x 6pcs/set Guitar Strings