This listing includes 4 pieces of compatible charge roller cleaning rollers designed for use with PCR units in C8030, 8035, 8045, 8055, 8070, 7525, 7530, 7535, 7545, 7830, 7855, and 7845 models.These components are manufactured to match the specifications for size and function, serving as direct replacements to restore standard operating function.The rollers facilitate the process within the printer mechanism.Compatibility is limited to the specific model numbers listed in the product title.