Designed to help easily identify and remove dust from DSLR sensors, the LensPen SensorKlear Loupe Kit keeps images clean and spot-free. Trusted by NASA for use on the International Space Station, this kit comes with everything needed to keep a DSLR dust-free. Use the magnified view of the SensorKlear Loupe to identify dust particles, and the Hurricane Blower to remove dry particles of dust. The SensorKlear II pen helps remove any remaining stubborn particles.