Get two cleaning accessories in one pack! The K-02 cleaning kit from NiSi gives users a great head start in maintaining their lens and filter glass. Use the air blower to remove large, rough particles from glass without making physical contact and risking scratches. Next, use the fine brush on the lens pen for smaller pieces that may be stuck or too small for the blower, and follow up with the other end of the lens pen, which houses a cleaning pad for the removal of water and oily residue.