This Cleaning Brush has stiff nylon long lasting durable bristles, 2 brushes per package.

One side is wider and long, the other side is narrow. Use with the Iosso Triple Action Oil to remove carbon burn and powder fouling. Use with the Iosso Bore Cleaner or Metal Polish for a little more aggresive cleaning. For industrial applications use the Safe-T-Solve, Metal Polish, or Mold Polish for a little more aggressive cleaning.