Compatible with Pro M402d, M402n, M402dn, M402dw, M403n, M403d, M403dn, M403dw, M426dw, M426fdn, M426fdw, M427dw, M427fdn, M427fdw.Also compatible with Pro 402, 403, 426, and 427 series printers.This listing is for 10 pieces of fixing fuser film sleeves.Part numbers referenced: RM2-5399-000CN, RM2-5425-000CN.Designed to replace the fuser film sleeve and restore normal fuser assembly.