Refill Kits include everything that you need (including instructions) to refill your own printer cartridges. You need to ensure that the refill kit you purchase is compatible with your printer.

Refill kits are usually much cheaper than purchasing new cartridges.

OEM cartridges are specifically manufactured for your printer - usually by the same manufacturer that made your printer.

These cartridges are usually more expensive than compatibles or refill kits.