Superior Electric (2 Pack) RSP30 5-Inch, 5 Hole Standard Adhesive-Back Sanding Pad (for 334 Random Orbit Sander) replaces Porter Cable 13901 # RSP30-2pk Includes (2) RSP30 Backing Pads New, Bulk Packed Genuine Superior Electric Replacement Part Consult owners manual for proper part number identification and proper installation Please refer to list for compatibility