Using Katun’s bulk toner in bags and bottles, as well as our drums, drum cleaning blades and other components, you can build quality laser toner cartridges for hundreds of today’s most widely placed printers. Katun’s bulk toner – and standard-life and extended-life drums – are 100% compatible and designed to work together as a system. Incompatibility is never an issue!rnrn(Note: Components are not available in all markets. Contact your Katun representative or visit the Katun Online Catalog for product availability.)