JC90-01106CReference - Cassette Sub-Guide Right M4020
JC90-01107BReference - Cassette Sub-Retard Samsung SL-M2625 XPress ProXpress and ML series. Cassette Sub-Retard Assembly (also referred to as a separation roller or mechanism) used in various Samsung and HP laser printers. It ensures that only a single sheet of paper is fed from the cassette at a time preventing jams.