All-Aluminum Components Eliminate "False-Positive Copper Fouling Indications
Cleaning jags have machined aluminum components that don’t react with ammonia-based solvents like brass parts sometimes do. Won’t produce blue-green stains on your patches that can be misinterpreted as “false positive” indications of copper fouling, so you’ll know when your bore really is copper-free. Similar in hardness to brass, Copper Eliminator parts won’t scratch the bore or damage the muzzle, and they’ll stand up to hard use. Female-threaded aluminum jags fit standard Dewey nylon-coated rods to extend some of the Copper Eliminator system’s benefits to your existing rod.
Big Book Catalog, Issue:71, Page:333
SPECS: Machined aluminum. Fits Dewey male-threaded rods, with thread patterns indicated in table.