This is a great new tool in drone lens cleaning technology, all products are designed to remove fingerprints, dust and grease. Perfect for drone camera lenses, filters, sensors and other optical items. Comes with a handy retractable dust removal brush and a special non-liquid cleaning element, designed to never dry out. LensPen products have cleaned camera lenses and all optics for more than 25 years. Safe and very easy to use on any drone. Get up to 500 cleans from each LensPen for Drone product.