The RRT12-120BA335 Rotary Tool is an excellent addition to the Ryobi 12V Cordless power tool system, offering a wide range of capabilities, including engraving, polishing, and sculpting. With this tool, you can take on a variety of projects and enjoy the convenience of a cordless design. This rotary tool operates on 12V and offers a range of 5,000 - 35,000 RPM, allowing users to easily cut, grind, and sand most materials. With the variable speed dial, you can adjust the speed to match the application, while the lightweight design makes it easier to use in tight spaces. The innovative Quick-Change 3.2mm Collet allows for accessories to be changed four times faster, making switching attachments quick and easy. Additionally, this tool comes with a 35 piece accessory set that includes cutting, sharpening, grinding, engraving, sanding and polishing attachments suitable for a wide range of materials and applications, as well as 45-degree platform guide, lawnmower blade sharpening guide and cutting guide attachments. The built in 12V battery is charged using the included USB cable for ease and convenience. The built in 12V battery is charged using the included USB cable for ease and convenience.