The BG66UM has a 0.65mm thin gauge and the perfect balance of maximum speed, control, and durability, making it the best choice for the world's top players.Color(s): Red, Yellow, Orange, Black, Metallic White, Neon Pink, Pearl Navy, Pastel Green, Blue, Gauge: 0.65 mm, Length: 10 m (33 ft) / 200 m (656 ft), Core: High-Intensity Nylon Multifilament, Outer: Special Braided High Polymer Nylon, Item Code: BG66UM