Patented and tool integrated EZ Change mechanism for quick and easy accessory change</br>Patented EZ Lock and EZ Drum mechanism for quick and easy change of wheels and sanding bands</br>The highest value rotary tool kit with most assorted variety of attachments and accessories in a premium metal case</br>Highest performing Dremel rotary motor with 20-percent more venting for cooler running</br>Variable speed and electronic feedback to keep speed constant under load and avoid stalling</br></br>Product Description</br></br>DREMEL Variable Speed Rotar</br><br/>http://www.amazon.com/gp/product/B00FBHFZT8