This versatile 135W Variable Speed Mini Rotary Drill Combi Multi Tool with 145 Piece Accessory Set and Case is just amazing value. It has a multitude of uses at home or work....just check out what it can do: it drills, carves, engraves, polishes, grinds, cuts, sands, sharpens and much, much more! It works on a high speed, low torque principle where the revolution can attain 32,000rpm compared to a typical 2,800rpm for a standard electric drill. The speed combined with the proper accessory does the work. The user simply holds the tool and guides it to do the job. The Rotary Drill comes with a 145 Piece Accessory Set and is compatible with most DREMEL and other brands of accessories. This highly versatile Rotary Drill Multi Tool Kit would be a great addition to any DIY fanatic or hobbists toolbox. Variable Rotation Speed: 10,000-32,000rpm, Manufacturer: Tooltime®