BrushOFF Sensor Cleaning Brush Not just a high-priced artist brush - BRUSHOFF was designed in conjunction with and engineered to NASA specs. Designed to neutralize the charge on dust particles and the sensor surface to prevent further dust attraction. Electrically insulated handle and detachable grounding cable. Retractable shaft and protective cap protects brush bristles when not in use - the brush barrel is its own solid carrying case. Photographic Solutions makes the only sensor cleaning products which are officially recommended by top digital camera manufacturers.