Derusting pen are perfect for cleaning various circuit boards. The brush head with double-head design, pen shape and brush shape. The effect of rust removal is better, excellent and wonderful, quick and convenient to use for home use. Features - Color: Mainly blue and golden. - Material: Wood, rust removal colloid. - Size: 21.00X1.00X1.00 cm/8.25X0.39X0.39 inch. - Cleaning tool is supple bristles brush shape and pen shape, useful and creative design for you. - The derusting pen are practical, which can clean glue and rust stains on the surface of precision instruments and circuit boards. - Derusting pen can be used to pre-clean the repair points before repairing to facilitate further repairs and improve the success rate of repairs. - You will have good use experience because of the perfect workmanship of this product. - It is lightweight, easy and convenient to carry and store when not in use without any effort. Package list: 4 x Derusting Pen