Product DescriptionPro-Shot Chamber Maid Chamber Star Swabs are purpose-built for .308 caliber / 7.62mm rifles, including AR-10, FN-FAL, and AK-47 platforms. Each strong, absorbent industrial wool felt star threads onto a standard .30 caliber bore brush to reach locking lug recesses, remove loosened fouling and carbon, and evenly apply cleaner, lubricant, preservative (CLP) or oil. Their patented full AR/AK lug recess pattern makes chamber cleaning fast and easy, especially when used after a chamber brush. Made in the USA.Product Highlights Optimized for .308 cal / 7.62mm star chambers on AR-10, FN-FAL, and AK-47 rifles Quickly removes carbon and fouling from locking lug recesses Threads onto standard .30 caliber bore brush; nylon bristle recommended Strong, absorbent industrial wool felt applies CLP or oil evenly Patented full AR/AK lug recess pattern; made in the USA Specs Product Type: Chamber star swabs Caliber/Compatibility: .308 caliber / 7.62mm; AR-10, FN-FAL, AK-47 star chambers Pack Quantity: 12 Material: Industrial wool felt Attachment: Threads onto standard .30 caliber bore brush (nylon bristle recommended) Patent: Chamber Star U.S. Patent #0562,935 Country of Manufacture: USA UPC: 709779200856 Manufacturer Part Number: PST308CMS12 Brand Name: Pro-Shot Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.