Canon toner cartridge in black, rated for approximately 2100 pages and designed for canon laser I-Sense MF4110, MF4430, MF4450, MF4550D and MF4570DN. It's a genuine like-for-like consumable, helping keep print quality and running costs consistent for as long as the printer's in service. After comparing online prices, www.marvel.co.za should be the cheapest on this product.