The .22/.223/.224 Caliber Copper Eliminator Male Jag features 8-32 thread compatibility and is specifically designed for effective copper fouling removal from rifle barrels..22/.223/.224 Caliber Copper Eliminator Male Thread Jag8-32 male threading for secure attachmentCompatible with .22 .223 and .224 caliber firearmsSpecialized copper eliminator design for fouling removalDurable construction for repeated cleaning useEssential for maintaining accuracy and barrel life in precision rifles this jag provides effective copper fouling removal when used with appropriate cleaning patches and solvents.