The Dremel 4300 is the first Dremel rotary tool to allow tool-less and collet-less accessory changes with the inclusion of the three-jaw chuck. The chuck accepts all Dremel accessory shank sizes for fast and convenient accessory changes without ever using a wrench. Featuring the all new pivot light, your projects are well-lit with an optimum line of sight since the light pivots to direct illumination where you want it. Experiencing the full range of Dremel rotary tool applications is easier than ever because the 4300 offers our most powerful motor with built-in variable speed and electronic feedback circuitry. And the slim, ergonomic body design provides a comfortable 360-degree grip zone No matter how you hold it for extended ease of use. The completely redesigned airflow system lets the Dremel 4300 run cool, quiet, and smooth so completing projects are more enjoyable than ever. PREMIUM ROTARY TOOL KIT Includes 4300 high performance rotary tool, 5 attachments, 40 high quality Dremel accessories, and plastic storage case. HIGH PERFORMANCE MOTOR Our most powerful motor delivers maximum performance even in the most demanding applications. VARIABLE SPEED 5,000 35,000 RPM with electronic feedback for consistent performance and accurate tool control. UNIVERSAL 3JAW CHUCK Allows the use of all Dremel accessory shank sizes making it compatible with the entire line of our high quality accessories. PIVOT LIGHT Rotates to illuminate your projects even in difficult to reach spaces. INNOVATED AIR FLOW SYSTEM Ventilation mechanism helps prevent heat build up for smoother, cooler, and quieter operation. REPLACEABLE BRUSHES Motor brushes can be replaced to extend tool life. ERGONOMIC BODY Slim for added comfort and grip during extended use DIAL AND SWITCH SEPERATION For added convenience and control. Coolrunning ball bearing construction for smooth and quiet operation. COMPATIBILITY Accommodates all Dremel rotary accessories and attachments for thousands of applications.