This is a compatible toner cartridge for GPC Image Flex, CRG-056. It comes with an IC chip, allowing you to use the remaining toner display function just like the genuine product. Compatible models include Satera LBP322i, etc. Black toner allows for approximately 10,000 pages of printing. This is a 2-pack, allowing you to use it with peace of mind while keeping costs down. This is a popular model currently sold on Amazon, and it is highly rated for both quality and compatibility.