CVA Cleaning Brush/Swab Set .50 Caliber. The brass brush has a proprietary Tufcor core wire that is corrosive-resistant with a Tufcor-type core wire that resists the formation of co-polymers in the barrel. The swab has a swivel core wire with a Tufcor core wire with a swivel core wire. The swab is a flat double-ended flat swab with a reusable plastic handle with a swivel connector & a reusable plastic swivel connector. The swab is a reusable alcohol knuckle with a swivel handle. The swab handle is not included. Specifications for CVA Cleaning Brush/Swab Set .50 Caliber: Manufacturer: CVA Fabric/Material: Brass Additional Features: Brass Projectile Caliber: .50 Caliber Package Contents: CVA Cleaning Brush/Swab Set .50 Caliber CVA AC1464B: Cleaning Brush/Swab Set .50 Caliber