Specifications:Features:- Tone color is thick.- Strong durability.- The surface of the alloy is multilayered.- Long time is not oxidized.- Suitable for senior guitarists.Model: SA-38Inner Material: Six Angle Steel CoreExternal Material: 90/10 BronzeColor: As picture showsSize:- E: 011 inch / 0.28 mm - B: 015 inch / 0.38 mm - G: 024 inch / 0.60 mm - D: 032 inch / 0.81 mm - A: 042 inch / 1.07 mm - E: 052 inch / 1.32 mmPackage Weight : 50 G / 1.76 OuncesPackage Dimensions (L*W*H) : 130*110*5 MM / 5.12*4.33*0.20 InchesRetail Packaging: Yes, General BoxPackage Include:1 x 6pcs/set Guitar Strings