The 4 Pack Surface Maxx High Pressure Filter Attachment with QD Fitting #2637681 is a set of four filter attachments designed for pressure washers. With a maximum pressure of 4500 psi, these attachments are suitable for use with gasoline-powered pressure washers. Made by the brand SurfaceMaxx in China, these filter attachments are a reliable and essential component for maintaining the performance and efficiency of your pressure washer. Perfect for outdoor power equipment enthusiasts looking to keep their yard, garden, or outdoor living spaces clean and well-maintained.