The LXTek 951XL Ink Cartridges in Magenta, Cyan, Black & 951XL Yellow are compatible with HP printers. These unopened ink cartridges have dimensions of 69 x 45 x 3 inches and a shipping weight of 135 pounds. The cartridges come in a pack of four colors - black, cyan, magenta, and yellow, and are designed by the brand LxTek. Manufactured with the model numbers 950XL and 951XL, these ink cartridges are sure to provide high-quality printing results.