and high quality Made of colorful coated copper alloy Long service life Tunes stable, sounds great Suitable for acoustic guitar Length: approx. 1 m (40inch) 6 different colorful strings: E string (1st) . 011inch(0.28mm) stainless steel B string (2nd) . 015inch(0.38mm) stainless steel G string (3rd) . 024inch(0.61mm) red bronze wound D string (4th) . 032inch(0.81mm) yellow bronze wound A string (5th) . 042inch(1.07mm) blue bronze wound E string (6th) . 052inch(1.32mm) green bronze wound Material: Copper alloy Package Includes:12 x Guitar strings. 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.