Bore Tech Centerfire Bore Stix, 22 Calorie/36 Free floating, dual bearing handle design allows for effortless motion and precise following of the barrel's rifling Feature a barrel safe, non-brass, proof-positive tip that eliminates the irritating false indication of Copper fouling Replaceable, female proof-positive tip also eliminates the need for additional Adapters when changing between jags and brushes Each Proof-Positive Tip Is Specially Machined To Provide A Completely Smooth, Edge Free Transition Between The Rod And OurProof-Positive Jags