The DREMEL® 4000 variable-speed rotary tool kit offers the highest performance and most versatility of all DREMEL® rotary tools. The increased strength of its motor and electronic feedback circuitry enables consistent performance at all speed levels. Ergonomics include a slim design that provides a 360 deg grip zone for added comfort and control. The DREMEL® 4000 can use all existing DREMEL® rotary tool accessories and attachments, as well as high-performance attachments, so you can do more with just one tool. 2 years warranty.