This is a replacement fuser film sleeve compatible with Pro M2040, M2135, M2540, M2635, M2640, M2735, P2235, P2040, P2040dn, and P2040dw printers.It corresponds to part numbers FK-1150, 302RV93050, and 2RV93050.This sleeve is designed to restore fuser functionality when replacing a worn or damaged unit.