【Compatibility】: 244194 Replacement Pump Repair Kit is designed for a wide range of airless sprayers from 390, 395, 490, 495, 595 & 3400 airless spray machines 【Complete Set】: Service kit includes 1 complete set of pump repair accessories, packings seals, and balls, providing everything you need for maintenance or replacement 【Material】 Airless paint sprayer seals are made of rubber and stainless steel materials, ensuring its longevity and reliability in use 【Easy to Install】The repair set gaskets are easy to install on your airless spraying machine's pump, save time and effort in maintenance or replacement tasks 【Airless Paint Sprayer Pump Maintenance Kit】: This pump repair sealing rings replacements are essential tools for maintaining the efficiency and longevity of your spray machine pump by ensuring they operate smoothly and effectively Specification: Material: Stainless Steel, Rubber   Size Chart: Diameter: 12mm, 15mm, 18mm, 20mm, 26mm Package Includes: 1 Pump Repair Kit Seal Rings Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.