Eastern Maine Shooting Supplies, Inc. EMSS1167 Brass Fouling Scraper Use With The Following Caliber: .58 – .62 / 20 GA Thread: 5/16-27 Made Of Solid Brass Loosens Compacted Burned Powder From Flash Pans. *Please Note That All Of The Brass & Aluminum Supplies Are Made On Site. Sometimes Machine Setup Is Involved If Our Inventory Is Low. This Might Lead To A Slight Delay In Shipping Time. If That Is The Case, I Will Always Email You And Let You Know In Case You Need To Cancel. Thank You For Your Understanding. Please Visit Our Store For More Sizes And Choices