This is a Compatible Konica-Minolta 4174-311 Black Laser Drum Unit designed to perform with Konica Minolta Laser Printers. It offers a standard yield of up to 20,000 pages, making it an economical alternative to the original Konica-Minolta drum unit. Constructed with new parts including OPC drums and wiper blades, this drum unit ensures reliable and high-quality printing results. The use of compatible replacement drum units does not void your printer warranty. We provide a 100% Quality Satisfaction Guarantee on our Compatible 4174-311 Laser Drum Unit.