Variable speed from 5,000 to 35,000 rpm provides maximum control and precision Separate on/off switch and speed control retains speed setting for the perfect speed every time EZ Twist™ nose cap with wrench for fast accessory changes Cool-running ball bearing construction for smooth and quiet operation Comfort grip housing for easier handling and better control High-capacity 12v lithium-ion battery for longer run times compared to the Dremel 8200