Otis Technology, Microfiber Gun Cloth, 3 Pack, White WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov. Pack of three gun cloths 12"x 8" Reusable Ideal for use on firearms, tools and knives as well as optics These gun cloths are made in China Otis is an American company Product Description The Otis Microfiber Gun Cloth is perfect for cleaning all surfaces. This 3 pack of 12" x 8" reusable cloths is ideal for use on firearms, tools and knives as well as optics.