Fuser Lower Sleeved Pressure Roller compatible with M402 M403 M426 M427 M402d M402n M402dn M402dw M403n M403d M403dn 402 403 426 427 series printers.Designed to consistent pressure during fusing process.Installs directly into designated printer models.Part functions as a component within the fuser assembly to assist in toner adhesion and paper movement.