Genuine Milwaukee replacement part. Includes one Pad.
This Pad is used to hold 5" Hook and Loop sandpaper with 8 vacuum holes.
Over the past few years the popularity of Hook and Loop paper has grown because of the ease of changing sandpaper when needed. Over that of the PSA (Pressure Sensitive Sandpaper)

Applying too much pressure on the sander may cause premature wear on the Hook and Loop pad.
When a pad needs to be replaced, simply remove the four screws that hold the pad to the sander, then replace it with a new pad.