Compatible with Porter Cable: 333 Type 1 Random Orbit Palm Sander 333 Type 2 Random Orbit Palm Sander 333 Type 3 Random Orbit Palm Sander 333 Type 4 Random Orbit Palm Sander 332 Type 1 Random Orbit Palm Sander 332 Type 2 Random Orbit Palm Sander 332 Type 3 Random Orbit Palm Sander 334 Type 1 Random Orbit Palm Sander 334 Type 2 Random Orbit Palm Sander 334 Type 3 Random Orbit Palm Sander 334 Type 4 Random Orbit Palm Sander 334 Type 5 Random Orbit Palm Sander 333 VS Type 1 Random Orbit VS Palm Sander we also carry 5" 8 hole for Porter Cable , please visit our ebay store