Keep your camera lens free of dust and dirt particles with this Optic Lens Cleaning Pen from Monoprice! The anti-static brush is ideal for removing loose dust and dirt particles without leaving a static charge that would simply attract more dust. The brush can be retracted into the pen body, to keep it clean when not in use. This pen also features a wool pad on one end, which is treated with a special carbon cleaning compound. The non-liquid cleaner will not dry out and is refreshed each time the cap is replaced. 30-day easy returns. No restocking fee. Free lifetime technical support. 1 year warranty.