The Fuser Unit Assembly is a must-have addition for users of Lexmark W840, W850, X850, X852, X854, X860, X862, and X864 models. This premium accessory ensures consistent and optimal fusing results, regardless of the voltage range - 110V or 220V. The sleek design and robust construction make it a reliable solution for refilling toner cartridges. With its high-quality components and streamlined installation, this Fuser Unit Assembly is designed to save you time and money. Invest in this essential accessory and enjoy superior print quality and longevity.