Swab It's to clean your Laser Lens without scratches. We have found wood fibers in our cotton swabs which scratched our Laser Lens. We have not damaged one lens since using Swab It's. They are double ended. Use with Ethyl alcohol to clean Laser Lens. They are lint-free and non-abrasive. They are perfect for cleaning those hard-to reach places. They won't harm delicate surfaces.