Please note: the matching machine of this product is the latest model of Graco 695 795 3900 airless sprayer in 2019, which can not match the machine produced before 2018. I have a picture to distinguish the new style from the ordinary style. The two products are not compatible. Please check the picture carefully before you buy to make sure that this product is what you need. All parts are included inside the pump Please note: please shake the pump several times before installing the pump to prevent the internal steel ball from sticking with the alloy plate, which may cause the product to fail to work normally. Warm tips:This product is more durable, generally can be used for a long time,If the inside of the pump is blocked by impurities, the machine does not work, you can do a simple troubleshooting according to the video provided by me., Manufacturer: GDHXW