3 Sets of 6 Acoustic Guitar Strings Including Red&iexcl;&cent;Yellow and Multicolour,Attached Gifts Including Strings Winder, Pin Puller, Plastic Bridge Pins and Ukulele Straps (11) Size and Material: 3 sets of acoustic guitar strings, each set contains 6 strings. Diameter :1:0.3mm/0.012 inch; 2:0.041mm/0.016 inch; 3:0.64mm/0.025 inch; 4:0.86mm/0.034 inch; 5:1.12mm/0.044inch;6: 1.37mm/0.054 inch, these are made of good steel material. Gift Including1 String Winder +1 Pin Puller+12pcs Plastic Bridge Pins+3 pcs Ukulele strapsred, green Color Highness Performance: Highly commended for its rich, balanced and warm acoustic tone with the bright and clear sound. Good Choice: suit for beginners to learn and practice, 3 sets of strings are good for replacement, lovely gift for guitar lovers Better Service: 100% satisfaction guaranteed and friendly customer service. so please contact me if you have any questions.