Warrior offers a 12V Cordless Variable-Speed Rotary Tool Kit for $29.99. It has a five-mode variable speed control, which gives it a range of 5,000 to 32,000 RPM. The Warrior 12V Cordless Variable ...

For example, The Home Depot has the Ryobi USB Lithium Rotary Tool and Power Carver packaged in a set called a "Pumpkin Carving Kit." There's another set called the "USB Lithium 4-Tool Hobby Combo ...