The tone is rich and warm with abundant harmonics. Sound is clear and bright. Each string comes in an individual package and is placed together in a bag. Proprietary rust layer, increase life of strings, and have better sound, magnetic and penetration. Color bright of exterior strings,uniform color,sound excellently,moderate soft,average stretch,another string harness by the dozens of fine nylon ,greatly increasing strings life. Colored guitar strings are not only beautiful, but also player can first time to distinguish each of strings. Colour: multicolor Material: nickel alloy + nylon Package Contents: 12 x Guitar String 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.