Be careful because there are errors in references indicated on the product page. Normally compatible Pixma MP 520 (Written on the site and the amazon bill .... That's why I bought them ...) But in fact they are not compatible with !!! On the box it is not received written MP520 ... I still open the box, cartridges are a priori the same but are not accepted by the printer !! Normally accepted by 23 printers ..... 12 euros that have not served much !! I am very disappointed by amazon !!!
