A convenient selection of precision nickel-plated brass jags and brass/copper bore brushes. Includes components for nearly every standard caliber between .17 and .45. All jags and brushes threaded 8⁄32 (.17 cal. threaded 5⁄40). Neatly organized in two mating hinged boxes with marked cavities, it’s easy to select the correct jag and brush for your particular application.