This listing includes 4 pieces of compatible charge roller cleaning rollers designed for use with PCR units.These replacement parts are engineered to fit the following printer models: C8030, 8035, 8045, 8055, 8070, 7525, 7530, 7535, 7545, 7830, 7855, and 7845.The components serve as functional equivalents intended to restore printing performance by replacing worn or damaged rollers during routine maintenance.Installation follows standard procedures for the specified equipment.