I accidentally purchased the wrong model. I realized my mistake when I tried to install the cleaning cartridge (yellow), so I've only opened one. I couldn't use them, so they are unused. This is a set of 12 BCI-351/350 XL compatible ink cartridges with refill ink, offering excellent cost performance. - Model: BCI-351/350 XL - Colors: Black, Magenta, Cyan, Yellow - Features: Includes refill ink - Quantity: 12 total - Compatibility: Compatible ink cartridges Thank you for looking.