One end of Hoppes Utility Brush has traditional-size bristles for cleaning large areas. The other end of Gun Cleaning Hoppe's Utility Brush features smaller bristles for getting into tighter spots. Choose either Hoppes 1380 nylon bristles or Hoppes 1380P phosphor bronze. Hopes Brushes are non-breakable and can dig out dirt without scratching metal. Hoppe Rifle Cleaning Brushes - Nylon / Phosphor Bronze're perfect for cleaning breeches in firearms, or great as all-purpose cleaning brushes.