Birchwood Casey Utility Brushes - 3 Pack - Birchwood Casey Utility Brushes come in a 3 pack with different style brush ends. Nylon brush: Use on delicate blueing and engraving. Bronze brush: ideal for tough deposits. Stainless brush: Use for the toughest removal of deposits. Features: 3 - Pack Utility Brush Nylon Brush Bronze Brush Stainless Brush