Take your firearm maintenance to the next level with the RCBS Formula 1 Walnut Hull Brass Shell Cleaning Media. Weighing in at a substantial 5lbs, this high-quality cleaning media is specifically engineered to provide an efficient and thorough cleaning for your firearm cases. Composed of a 12/12 sieve walnut shell, this durable cleaning media is treated with two distinct special oxides, ensuring an effective and reliable cleaning process. Its unique formulation is designed to swiftly eliminate dirt and grime from your cases, restoring their shine and extending their lifespan.Whether youre using the RCBS Sidewinder case tumbler or any other vibratory case tumbler, this versatile cleaning media delivers consistent results. Its superior performance makes it a preferred choice for firearm enthusiasts who demand nothing but the best for their equipment. Experience the difference of a clean, polished firearm case with the RCBS Formula 1 Walnut Hull Brass Shell Cleaning Media. Its not just a cleaning solution, its a commitment to quality and performance.