Superior Electric RSP30 5 Inch Sander Pad (PSA/Adhesive Back, 5 Vacuum Holes) replaces Porter Cable 13901. This part is compatible with: Porter Cable: 332 Type 1, Type 2, Type 3, 333 Type 1, Type 2, Type 3, Type 4, 333VS Type 1, 334 Type 1, Type 2, Type 3, Type 4, Type 5