The Nikon Optics Maintenance Kit contains four essential items to create peak lens performance. Useful for everything from sweeping dust and other fine particles from lenses, removing residue from stains or marks and picking up small bits of dirt or debris from hard-to-reach lens surface positions. Manufactures Website Address www.nikonsportoptics.com Warranty Information Lifetime Full Warranty. If any product is found to have defects in workmanship or materials, Nikon will, at their option, repair or replace it at no charge, even if you're not the original owner.