This product is produced by and is applicable to the after-sales market of 390 395 490 495 595 3400 airless spray pump. 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. It comes with all the seals to successfully rebuild your sprayer.All the leathers and machined parts are made of the highest quality materials. Please note: Please carefully review the product description before purchasing to avoid making incorrect purchases, wasting your time, and incurring high logistics costs. This product is incompatible with spray manufactured after 2015 Warm tip:All parts are included inside the pump.This product is durable and can be used for a long time. Designed for airless spraying machine.If the paint contains impurities, it may cause blockage and the pump will not work. Color: As Shown Material: alloy steel Package Contents: 1 set x pump sprayer parts Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.