The Hoppe's 1307P Phosphor Bronze Pistol Brush is specifically designed for .38 caliber firearms featuring durable phosphor bronze construction for effective cleaning.Hoppe's 1307P Phosphor Bronze Pistol Brush.38 caliber sizing for proper bore fit10-pack quantity for extended usePhosphor bronze bristles built stout for efficient cleaningMost effective on lead buildup and foulingEssential for maintaining .38 caliber pistols these robust brushes effectively remove lead deposits and fouling to keep your firearm performing at its best.