1. Large capacity, non-clogging, strong compatibility, can achieve fast and professional printing quality. 2. Provide clear images and texts, 3. Smooth ink, clear printing, increase the smoothness of ink, improve printing effect and printing life 4. Stable performance, bright colors, environmental protection, and time saving. 5. Portable and easy to install Product name: Compatible ink cartridges for HP303XL printer Model: 303XL Applicable model: for capacity: black 21ml Filling: can be filled Number of pages: 600 pages in black, 450 pages in three colors (A4 format), 5% coverage Applicable scope: for 6220 6222 6230 6234 6252 6255 6258 7120 7130 7132 7134 7155 7158 7164 7800 7820 7822 7830 7855 7858 7864 Material:ABS colour: black Package Contents: 1 x Printer Only the above package content, other products are not included. Note: Light 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.