Features of the DWE6411-B1 Sheet Sander: 
2.3 AMP motor sands at 14,000 OPM
Improved paper clamp features for better paper retention
Reduced overall height of the sander to get the user closer to their work, improving precision and accuracy
Rubber dust boot over the switch to protect against dust ingestion for longer switch life
To attach dust port to other vacs with 1-1/4 in. hoses use DWV9000 universal quick connector 
Rubber overmold texture provides smooth and comfortable control while sanding
Locking dust-port system that allows the user to lock vacuum hose up with the sander
Seperate counterweight design reduces vibration
Dust port designed to fit directly to the DWV010 or DWV012 dust collectors