This .24/6mm/.25 caliber cleaning jag features 8-36 female threading and is specifically designed for copper elimination during firearm maintenance..24/6mm/.25 Caliber Female Thread Jag8-36 female thread compatibilityCopper eliminator design for effective cleaningPrecision-engineered for multiple caliber compatibilityProfessional-grade firearm cleaning accessoryEssential for shooters and gunsmiths who need reliable copper fouling removal in .24 6mm and .25 caliber firearms with compatible cleaning rod threading.