Product DescriptionThe Pro-Shot Patriot Series Bore Brush is built for tough cleaning without harming your shotgun&';s bore. Stiff red, white, and blue nylon bristles aggressively remove fouling yet resist flattening, while a solid brass core and coupling deliver durability and smooth threading. Designed for 20 gauge shotguns, this heavy-duty brush uses the standard American #5/16-27 thread and stands up to ammonia and oil-based cleaners. Made in the USA.Product Highlights Stiff nylon bristles remove heavy fouling without damaging the bore Solid brass core and coupling for strength and reliable attachment Resistant to ammonia and oil-based cleaners for long service life Patriotic red, white, and blue bristle design Standard American shotgun #5/16-27 thread; 20 gauge compatibility Specs Product Type: Shotgun bore brush Gauge Compatibility: 20 Gauge Thread: Standard #5/16-27 Bristle Material: Nylon (stiff, resistant to chemicals) Core/Coupling Material: Solid brass Color: Red/White/Blue Country of Manufacture: USA UPC: 709779200276 Manufacturer Part Number: PSTPS20 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.