Proprietary Silver Plated Coat, Anti-Rust, 3-4 times longer life than normal stringsStrong 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-SColor: As shownMaterial: Hexagonal carbon steel & Silver Plated CoatSteel CoreSilver-Plated Cooper Alloy WoundColorful Ball-EndTX620 MODEL: E: 0.010 inch/0.25 mmB: 0.014 inch /0.36 mmG: 0.023 inch /0.58 mmD: 0.030 inch / 0.76 mmA 0.039 inch / 0.99 mmE: 0.047 inch / 1.20 mmPackage: 1* Ukulele Strings (6pcs/set)Only the above package content, other products are not included.Note: Light 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.