Vivid Colors (non-OEM) large size refillable ink cartridge are designed to perform with maximum reliability it is pre-filled with premium UV inks that was designed to meet the OEM quality, so that our customer will obtain the same high quality results as OEM inks. Using this cartridge, there is no replacement is needed. When ink is running low, all you need is to refill the cartridge  by pouring ink directly into it. This is a longer printing period because you have an unlimited ink supply. Product Details: For use with: (non-OEM)  WP-4010 WP4020 WP4090 WP4520 WP4530 WP4540 WP4590 Color: Black, Cyan, Magenta, Yellow Pre-filled with 80ml per cartridge.  Ink: UV(Ultra violet) dye based inks that are more resistant to light, provides vibrant vivid colors and longer lasting prints.  Quick and Easy Installation Pre-Assembled 80% Saving on individual Inkjet Cartridge   Normal handling time for all orders to ship out is 1 business day!