Scratch Brush Pen Set, Fiberglass, Steel and Brass Bristles 3-Pack. It is great for polishing and cleaning. Includes one fiberglass scratch pen, one steel pen and one brass pen. Ideal for use with electronics and removing corrosion and rust in hard to reach places. 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 7616SB Fiberglass Scratch Brush, Pen Type. 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.