Features:Made of nylon, has stronger flexibility, louder, more beautiful and persistent timbre than steel string or sheep gut.With more stable tone, the effects on nylon proves less than that on sheep gut when humidity and temperature change.Optimized for Concert Ukuleles and tuned to standard GCEA tuning for playing various styles of music.It is an ideal choice as the performance string or replacement string for beginners, trainers and professional players.With the compact size and light weight, easy to install, carry and store for replacement.Specifications:Material: NylonString Length: 750mmNote/inch/mm: 1E / 0.024 / 0.62; 2B / 0.031 / 0.80; 3G / 0.037 / 0.95; 4D / 0.026 / 0.67Item Weight: approx 4.5g / 0.15ozPackage Size: 11.5 * 11cm / 4.52 * 4.33inPackage Weight: 14g / 0.49ozPackage List:1 * 4 Strings Set