There are 10 different sizes of Keyboard Cleaning Brushes, including 7 hard brushes and 3 soft bristles, which are convenient for cleaning each component in different places. Effectively remove debris from keyboard gaps and dust inside the computer, maintain cleanliness to ensure better equipment operation, and prevent excessive accumulation of dust from damaging the equipment, eliminating expensive maintenance costs. Anti static: The main material of the anti static brush is nylon material, which can clean electronic components, computer motherboards, etc. with confidence. The yellow bristle brush is not anti-static. The yellow and blue bristles are soft bristles that can clean computer monitors, car monitors, and camera lenses. Cleaning keyboard brush kit is suitable for many places, such as keyboards, computer fans, car vents, door and window tracks, and razors. It can effectively remove dust and debris.