Hi there, if you would like to follow this link;-https://www.tonergiant.co.uk/model/Brother-MFC-J680DW-ink-cartridges/. You will be able to see all of the suitable cartridges for your machine (Brother MFC-J680DW). We offer all four colours for the machine individually and also as a pack, I would advise purchasing the pack if you need all four colours as this will be cheaper than purchasing all four as individuals. If you need any further assistance please feel free to email
[email protected] and our excellent customer service team will be more than happy to help.