Great to remove what nylon bristles and cotton patches struggle with
Brush Core Type: Aluminum. Brush Thread: 8-32 (Fits almost any rods or flex cables designed for cleaning)
Bronze is strong enough to remove leading, but soft enough to not scratch steel bores
Works in the following bores: 9x19mm Parabellum (9mm NATO) .357 S&W Magnum .38 S&W Special .357 SIG .380 ACP .38 ACP (.38 Auto) .38 Super And other 9mm/0.38" sized bores