Description Precision toner pen tip: Lens cleaning pen tip made of activated carbon powder tip, effectively absorbs fingerprints and grease. Filament brush: The filament brush can clean the dust off a lens and even reach the crevices of the zoom ring. Magnet design: Flip the cleaning tip & you can use the camera lens cleaning pen and add the carbon powder. Portable design: The lens cleaning pen is designed with a double tip, which makes it flexible to use and be carried. Replaceable: When the cleaning tip becomes dirty, you can replace it. It is recommended to replace the tip every 2 months to protect the lens coating.