The Worx WX655 Vibrafree rotary sander features a dual oscillating pattern, with two separate sanding sheets rotating in opposing directions. The patented Vibrafree technology reduces vibrations and thus the vibrational strain on the user. The integrated CDS dust extraction system ensures a clean work environment and an unobstructed view of the workpiece. Once the dust box is full, it can be quickly emptied at the touch of a button.