Features: Universal ukulele strings,substitutional strings for soprano (21 inch)/ concert (23 inch)/ tenor (26 inch) ukulele, remove extra-strings for a smaller ukulele after installation. Easy to install,labeling number-1, 2, 3, 4 to differentiate 4 strings and the durable material of nylon help you practice ukulele. Quantity,4 sets of white ukulele strings (each set has 4 strings). Sizes of strings,1st/ a is 0.026 x 25.59 inches, 2nd/ e: 0.030 x 27.56 inches, 3rd/ c: 0.038 x 27.56 inches, 4th/ g: 0.027 x 25.59 inches (wxl) Wonderful gift,ukulele strings sweet gift for ukulele lovers. Specifications: Material:Nylon Note: Please allow 1-2cm errors due to manual measurement. Due to the difference betweeen different monitors,the picture may not reflect the actual color of the item. Package includes: 4 Piece Ukulele Strings