.303 Cal./7.7MM Brush Pro Shot Brass Core bore brushes are safer then aluminum core brushes for a number of reasons. The Brass Core/Bronze Bristle Brush cleans the barrel completely. A brass core brush holds the bristles longer and can withstand frequent harsh use. Pro Shot brushes are filled with superior over-sized bronze bristles that are larger than standard. They fit tighter and last longer. More bristles per inch on a Pro-Shot bore brush. Pro Shot brushes have a looped brush end to be safer for the user.. Our brass coupling is made with precision threads to stay screwed into cleaning rods and will hold the brass core for long lasting tough use. Manufacturer: Pro Shot Products, Inc Model: PRO303R
