This product is bristle brush rust removal pen brush, suitable for general circuit boards cleaning and surface treatment repair. Derusting pen can be used to pre-clean the repair points before repairing to facilitate further repairs and improve the success rate of repairs. Features - Color: Mainly blue and golden. - Material: Wood, rust removal colloid. - Size: 21.00X1.00X1.00 cm/8.25X0.39X0.39 inch. - High-grade material, flexibility and excellent durability, easy to use, for . - The rust removal pen is suitable for circuit board repair, circuit board clean, circuit board derusting. - Pen type bristle brush is unique appearance design, useful and practical for professional use. - It is unique in design, but it's practical to use, which will give you fantastic use experience. - Lightweight and portable, it is very convenient for you to carry with in everywhere you like. Package list: 4 x Derusting Pen