The product is a 4-pack of high yield ink cartridges designed for use with Brother printers, specifically models J6510DW and J6710DW. The cartridges come in 4 colors - black, cyan, magenta, and yellow - and are compatible with the LC79 series. Each cartridge has a height of 6.00 inches and a width of 2.00 inches, making them convenient to handle and use. This product is a reliable and cost-effective choice for those looking to print high-quality documents and images with their Brother printers.