Pro-Shot .50 Caliber / 12.7mm Nylon Rifle Brush Black. The thicker stiffer grade bristles allow for back and forth action and eliminate heavy fouling fast. Specifications for Pro-Shot .50 Caliber / 12.7mm Nylon Rifle Brush: Manufacturer: Pro-Shot Color: Black Gun Type: Rifle Features of Pro-Shot .50 Caliber / 12.7mm Nylon Rifle Brush Pro-Shot Bore Brush - Precision Engineered Design Fit & Function Superior Heavy Duty Stiff Nylon Bristles with Extra Thick Fill Precision #8-32 Threads Package Contents: Pro-Shot .50 Caliber / 12.7mm Nylon Rifle Brush The Pro-Shot Nylon Pistol Bore Brush10mm/.40 Caliber 10NP is a quality addition to the Pro-Shot lineup. For more great deals on Cleaning Rods & Accessories by Pro-Shot please browse our Pro-Shot Gun Cleaning Kits page. Pro-Shot 50NR: .50 Caliber / 12.7mm Nylon Rifle Brush Black