The SE Pen-Style Scratch Brushes (3 PC.) feature crimped brass bristles that clean tight areas with detail. They are great for automotive use, cleaning and polishing electronics and jewelry, preparing for soldering, and removing dirt and rust from metal. These pens can also burnish, finish, grind, polish, and texture many surfaces, including metal clay pieces, wood, and more. They are easy and convenient to use. Twist the end to achieve various lengths and firmness of bristles. Please remember to twist the end to retract the brass bristles when storing to preserve them. SE is committed to providing the customer with the best source for value possible on the market. You will enjoy the quality, function and usefulness of our SE Pen-Style Scratch Brushes (3 PC.). IPR Rights Notice: Important: Avoid getting counterfeit items. Genuine SE products come with the SE logo on the packaging. SE is a registered trademark protected by US Trademark Law.