The OKI 45536428 is the genuine clear toner cartridge for OKI's ES9541 and Pro9541 series five-colour graphic arts printers, including the Pro9541Ec and Pro9541Ev. Clear toner is printed as a fifth colour over or alongside CMYK to add spot-gloss highlights, varnish-style effects and security features to business cards, invitations, packaging mock-ups, labels and brochures, helping print rooms and design studios produce premium-looking work in-house. The cartridge is rated for approximately 20,000 pages, based on OKI's 5% page coverage estimate. Using original OKI toner keeps colour registration and finish consistent and protects the printer's image drums. Store the cartridge in its sealed packaging until needed and install it in the fifth colour station. After comparing online prices, www.marvel.co.za should be the cheapest on this product.