The CS-20, Carson C6™ Compact Lens Cleaner Pen, 13mm Tip contains our Dry Nano-Particle Cleaning Formula that wipes away smudges, grime and fingerprints with ease. The Soft Tip is safe and easy to use on all lenses. The C6™ Compact Lens Cleaner includes a retractable brush to remove dust and debris. It also includes a built-in ring on cap which allows easy attachment to Keychains, Carabiners, and other Clips. The C6™ Compact Lens Cleaner is perfect for cleaning any lens including Binoculars and Cameras.