Proprietary Silver Plated Coat, Anti-Rust, 3-4 times longer life than normal strings Strong tightness offering excellent resonates, extra light tension. Good feeling, high glossiness, full tone. The strings of -TX series has strong durability, clearly timbre and feeling comfortable. For Primary guitar players, you deserve strings are in here. Model: TX620-S Color: As shown Material: Hexagonal carbon steel & Silver Plated Coat Steel Core Silver-Plated Alloy Wound Colorful Ball-End TX620 MODEL: E: 0.010 inch/0.25 mm B: 0.014 inch /0.36 mm G: 0.023 inch /0.58 mm D: 0.030 inch / 0.76 mm A 0.039 inch / 0.99 mm E: 0.047 inch / 1.20 mm Package: 4 x Ukulele Strings (6pcs/set) 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.