Birchwood Casey's Angled Cleaning Brushes have bent necks that allow easier access to all the hard-to-reach places on firearms that can cause cleaning headaches. Each brush as a different type of bristle. Use stainless steel and bronze bristles for stubborn metal deposists and use nylon to avoid scratches on more sensitive surfaces or light cleaning. All three brushes feature comfortable grips. Solvent and corrosion-resistant.