The Thompson Center Arms 9062R bore brush/swab is specifically designed for .45 caliber rifles with 10-32 thread pattern compatibility and cotton construction for effective barrel cleaning.Thompson Center Arms Model 9062R Bore Brush/Swab.45 caliber rifle compatibility10-32 thread pattern for secure attachmentCotton material for gentle yet thorough cleaningProfessional-grade cleaning accessoryEssential for proper rifle maintenance this bore cleaning tool ensures optimal barrel care and firearm performance for .45 caliber rifles with compatible threading.