Material: Rustproof coating for durable use Length: Each guitar string is approximately 87 cm (34.2 inches) Package includes: 2 sets of acoustic guitar strings, each set contains 6 strings in 6 different diameters; Suitable as spare strings to keep in your bag String diameters: 1: 0.2 mm (0.007 inch) 2: 0.3 mm (0.01 inch) 3: 0.6 mm (0.02 inch) 4: 0.7 mm (0.027 inch) 5: 1 mm (0.039 inch) 6: 1.2 mm (0.047 inch) Suitable for: Colored guitar strings can assist beginners in learning and practicing; Also ideal for guitarists who want to enhance the appearance of their acoustic guitar Color: Brass with colorful accents Material: Copper wire Package Contents: 6 brass strings 6 color-coated strings Note: The package includes only the items listed above. Other products are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1-3 cm.