This will allow you to remove & reuse the back up pad. To be used in conjunction reusable foam back up pad. Fits porter cable #7800 dustless sander. 120 grit 9" velour backed sanding disc To be used with model 400-00012 Foam pack up pad that will allow you to replace the discs Re-use the foam pad To be used in conjunction Reusable foam back up sanding disc.
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