Designed with heavy-duty, stiff red nylon bristles, KleenBore nylon bristle bore brushes offer exceptional cleaning power and durability. Known for their high-quality construction, these brushes are recommended by major firearms manufacturers for their reliable cleaning ability. The dense, thick bristle configuration is engineered to penetrate and clean even the most challenging fouling and debris, ensuring a deep, precise clean with every use. Perfect for gun enthusiasts and professional shooters alike, KleenBore brushes provide the ultimate tool for maintaining your firearms and improving overall performance. When it comes to a durable, effective bore cleaning solution, KleenBore stands above the rest. Durable bristles Threads conforming to the American Standard #8-32 specification Manufactured in the united states