The dewalt dwe6423 random orbit sander has a variable speed motor that adjusts from 8000 12000 orbits per minute providing the ideal sanding speed for all materials offering low vibration operation for extended usage without fatigue with a controlled finishing system that controls pad speed and minimises gouging during start up the sander has a textured anti slip top and body grip that provides ultimate comfort and control during use the dust sealed switch prevents contamination and its sealed 1