The Allen Bore-Nado Barrel Cleaning Rope 70582 is a new in pack cleaning kit designed for 9MM, 357 caliber, and 380 caliber barrels. The multicolor rope is specifically formulated to effectively clean and maintain the interior of these specific calibers, ensuring optimal performance and longevity for your firearm. This product from Allen is a must-have for gun enthusiasts looking to properly care for and maintain their firearms.