Bright, long lasting and good quality strings have great tone and good performance. These Beginner Acoustic Guitar Strings deliver fine tone and perfect for achieving a folk music. Product Name: Acoustic Guitar Strings Material: Steel Color: 6x Silver Tone, 12x Brass Tone Type: 1#, 2#, 3#, 4#, 5#, 6# Size: 1#: 90 x 0.03cm / 35.4inch x 0.012inch (L x D) 2#: 91 x 0.035cm / 35.8inch x 0.014inch (L x D) 3#: 90 x 0.06cm / 35.4inch x 0.024inch (L x D) 4#: 90 x 0.075cm / 35.4inch x 0.03inch (L x D) 5#: 89 x 0.1cm / 35inch x 0.04inch (L x D) 6#: 86.5 x 0.127cm / 34.1inch x 0.05inch (L x D) Package Contents: 18 x Acoustic Guitar Strings Only the above package content, other products are not included. Note: Light reflection 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.