The Milton 1019-6 Micro Filter is a high-quality air compressor filter designed for automotive use. Made by the trusted brand Milton, this filter features a 3/8" NPT site glass metal bowl for efficient filtration of compressed air. Perfect for maintaining clean and compressed air in your vehicle's air system, the Milton 1019-6 Micro Filter is a reliable and durable tool for automotive air tool applications. Used out of package but doesn’t appear to have much if any use