Compressed air lubricators deliver oil to air tools and equipment to improve performance and reduce wear. They add the correct ratio of oil to the compressed air supply, delivering a constant flow. Lubricators are installed downstream from other air treatment devices and often at the point of use. FRL compressed air lubricators refer to a modular system comprised of a filter, a regulator, and a lubricator. FRLs treat the compressed air before it is delivered to downstream equipment, or the point of use. Miniature compressed air lubricators are compact, lightweight and attach directly to an air tool.