The Dremel 4000 variable speed rotary tool is one of the highest performance and most versatility of all Dremel rotary tools. The increased strength of its motor plus electronic feedback circuitry enables consistent performance at all speed levels. Dremel 4000 can use all existing Dremel rotary tool accessories and attachments plus high-performance attachments to complete the widest range of projects. A slim, ergonomic body provides a 360-degree grip zone for comfort and control in any grip position.  The Dremel 4000 comes with a two-year warranty.  High-performance motor for maximum performance at all speeds.  Electronic feedback for consistent speed under load.  Variable speed (5.000 - 35.000 rpms) provides precision with maximum control.  Separate on/off switch and speed control dial for the perfect speed every time.  Quick collet lock for fast accessory changes.  Cool-running ball bearing construction for smooth and quiet operation.  Replaceable motor brushes extend tool life.  Two year warranty.  Contents: Rotary Tool, (4) Attachments, (34) Genuine Dremel Accessories, Deluxe Carrying Case, Accessory Case, Manual.