Rotary tools, also known as rotary multi-tools or Dremel tools (after the popular brand), are handheld power tools that use a rotating bit or accessory for various applications. They are compact and versatile tools that can be used for cutting, grinding, polishing, engraving, drilling, and more. Here are some key features and uses of rotary tools:

1. Motor and Speed Control: Rotary tools are equipped with a high-speed motor that drives the rotation of the bits or accessories. The motor power and speed can vary depending on the specific model. Many rotary tools offer variable speed control, allowing you to adjust the speed based on the task and material being worked on. This feature provides better control and precision, especially for delicate or intricate work.

2. Interchangeable Accessories: Rotary tools come with a wide range of interchangeable accessories, including cutting wheels, grinding stones, sanding drums, polishing pads, engraving bits, routing bits, and more. These accessories can be easily attached to the rotary tool, allowing for a wide range of applications. Each accessory is designed for specific tasks and materials, providing versatility for various projects.

3. Compact and Lightweight: Rotary tools are small, lightweight, and easy to handle, making them ideal for detailed and precise work. Their compact size allows them to reach tight spaces and corners that larger power tools may not be able to access. This makes rotary tools popular among hobbyists, DIY enthusiasts, and crafters.

4. Versatility: Rotary tools are used in various industries and applications, including woodworking, metalworking, jewelry making, electronics, and crafts. They can be used for tasks such as engraving designs, polishing jewelry, sanding small surfaces, drilling small holes, cutting intricate shapes, and even trimming nails or pet grooming with the appropriate attachments.

5. Ergonomics and Grip: Rotary tools are designed with ergonomics in mind, providing a comfortable grip for extended use. Some models have rubberized grips or ergonomic designs to reduce fatigue and enhance control during operation. The lightweight nature of rotary tools also adds to their ergonomic advantages.

6. Additional Features: Some rotary tools come with additional features like LED lights to illuminate the work area, a variable collet system for easy accessory changes, and integrated dust collection systems to minimize mess and improve visibility.

Rotary tools are highly versatile tools that are suitable for both professional and DIY applications. They offer precision, control, and flexibility, making them a popular choice for intricate and detailed work. It is important to use rotary tools safely, following the manufacturer's instructions and wearing appropriate safety gear such as safety glasses and gloves.