The product is a lot of two "Dust Off Vector Valves" by Falcon for Dust-Off Plus refills. Made by Falcon, these valves are designed for all-purpose use and are manufactured in the United States. Each valve weighs 3 ounces and are sold for a total of $34.99 for the lot of two units. This product is ideal for cleaning and dusting off cameras, computers, laptops, and other electronics, providing a convenient and efficient solution for maintaining a clean and reliable workspace.MSRP $42.99 ea or $85.98 for two.