The Riso S-8188uiMaster FII SF 5130 EZ 221 390 is an original toner cartridge specifically designed for RISO printers. It is compatible with the Riso SF 5130 model and is manufactured by RISO, ensuring quality and reliability. The product does not come with a manufacturer's guarantee, but it is guaranteed to meet the high standards set by RISO for their printing products. This toner cartridge is essential for achieving professional and high-quality prints with a RISO printer.