Activated Carbon Tip for Effective Absorption: This lens pen features a tip made with activated carbon, designed to absorb surface marks from lenses efficiently. Avoid contact with water to prevent staining, and simply apply the tip to the marked area before wiping and brushing for a clean result 3-in-1 Cleaning Head Design: Each lens cleaning pen combines a brush, a large cleaning head, and a small cleaning head. This thoughtful configuration enhances the cleaning process, helping maintain lens clarity and performance for cameras and other optical devices User-Friendly Operation: The lens pen for optics comes with a sliding mechanism for quick brush extension and easy switching between cleaning heads. With no complicated setup, users can maintain their equipment with minimal effort and maximum convenience Compact and Portable Size: Comparable to the size of a standard writing pen, this lens brush fits easily in a pocket or camera bag. Whether shooting in the field or working indoors, it’s always on hand for quick and easy maintenance Versatile Optical Surface Cleaning: This lens pen is suitable for more than just camera lenses. Use it on telescopes, binoculars, magnifying glasses, and phone screens. With three lens pens included, you’ll have enough for both personal use and sharing with fellow photographers