Product DescriptionBore Tech's Proof-Positive Rifle Jag in .20 caliber is engineered to deliver accurate, copper-free cleaning results. Built from a proprietary, 100% brass-free alloy, it prevents the false blue copper indication often seen with traditional brass jags when using copper-removing solvents. Precision machining and a dual set of four contact rings maximize patch engagement and maintain concentric pressure on the bore. A relief space between the ring sets acts as a solvent reservoir for efficient delivery, while the reverse taper at the rear provides a smooth transition to the cleaning rod and helps protect the firearm's crown-especially when paired with Proof-Positive Bore Stix cleaning rods. The .20 caliber size and 5/40 thread pitch ensure a proper fit with compatible rods and patch sizes.Product Highlights100% brass-free alloy eliminates false copper fouling indicationsDual 4-ring design boosts patch contact and consistent bore pressureBuilt-in solvent reservoir between ring sets for optimized cleaningReverse taper protects the crown and ensures smooth rod-to-jag transition.20 caliber with 5/40 thread pitch for precise compatibilitySpecsProduct Type: Proof-Positive Rifle JagCaliber: .20 CalThread Pitch: 5/40A (inches): 0.155A (inches): 2.000Brand: Bore TechManufacturer Part Number: BORBTAJ2000UPC: 667739980289Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product's manufacturer.