Genuine OEM Replacement Part 151281-08. Compatible with many Dewalt/Porter Cable R/O sanders. What's included : (2) 151281-08 backing pads. New, bulk packaged. Please refer to list below for compatibility : .. Compatible with the following models: DW421 Type 1 Random Orbit Sander, DW421 Type 2 Random Orbit Sander, DW423 Type 1 15 inch EVS Random Orbit Sander, DW423 Type 2 15 inch EVS Random Orbit Sander, D26453 Type 1 Random Orbit Sander, D26451 Type 1 Random Orbit Sander, DW422 Type 1 EVS Random Orbit Palm Sander, D26450 Type 1 Random Orbit Sander, D26456 Type 1 5" Palm Grip Sander, DW26451K (Type 1) 5 Random Orbit Sander, DW26453K (Type 1) 5 Random Orbit Sander, Porter Cable: 343 Type 1 5" Random Orbit Sander, 343VS Type 1 5" Variable Speed Random Orbit Sander, 343VS Type 2 5" Variable Speed Random Orbit Sander, 390 Type 1 5" Low Profile Random Orbit Sander, 382 (Type 1) 5 Palm Grip R.O. Sander, 382 Type 1 5 Palm Grip Sander, 390K Type 1 Sander, Black and Decker: 27708 Type 1 5 Random Orbit Sander With EVS, 27707 Type 1 5 Random Orbit Sander, 25708 Type 1 5 Variable Speed Orbital Sander