The Hoppe's 1308P Phosphor Bronze Pistol Brush is designed specifically for .44/.45 caliber firearms providing professional-grade cleaning performance trusted by hunters shooters and military personnel.Hoppe's 1308P Phosphor Bronze Pistol Brush - 10 PackCompatible with .44/.45 caliber pistolsStout bristles for efficient cleaning actionEffective on lead buildup and foulingPhosphor bronze construction for durabilityHoppe's has earned its reputation as the most trusted name in gun care delivering advanced cleaning technologies that ensure your firearms perform reliably when it matters most.