This Nutec Digital Ink Diamond D15-TRV2 Full Set is a great addition to your printing needs. The set includes cartridges in green, cyan, light black, magenta, and black colors that are compatible with Roland vg3-640 models. With a unit quantity of 5, you can enjoy high-quality prints for a longer period of time. The brand, Nutec, is known for its reliable and durable ink cartridges that produce stunning results. This product is perfect for those who need to print documents or photos with vibrant colors.