HP 5851-7207 white backing retention clips are replacement clips that hold the white backing in place in a compatible LaserJet document feeder. This is the clips-only kit; the white backing itself is not included.
The clips are listed for compatible HP LaserJet multifunction printers, including the M631, M632 and M633 series. They serve a focused repair purpose: retaining the feeder’s white backing as part of the document feeder assembly.