An EZ Lock mandrel, EZ Lock cut-off wheels and the handy collet fan are part of this 130-Piece kit filled with genuine Dremel accessories. Offering reusable storage bins and lift-out trays for easy organization of the included bits, this kit is ready for cutting, grinding, polishing, sanding, cleaning and more. The kit also includes sanding bands, sandpaper discs, polishing compound, felt polishing wheels, aluminum oxide grinding stones, silicon carbide grinding stone, mandrels, wire brush, wrench and a reusable carrying case with clear lid. The Dremel 4300 is the first Dremel rotary tool to allow tool-less and collet-less accessory changes with the inclusion of the 3-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° 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.