The 22 Caliber Rimfire Proof Positive Jag features a Pierce Style design engineered for effective barrel cleaning of .22 rimfire firearms.22 Caliber Rimfire Proof Positive Pierce Style JagModel: BTAJ-22-RFPierce style design for secure patch attachmentProof positive construction for reliable cleaningSpecifically sized for .22 caliber rimfire bore dimensionsEssential for maintaining accuracy and performance of .22 rimfire rifles and pistols this jag ensures thorough cleaning with proper patch engagement throughout the bore.