Interchangeable heads refer to components that can be easily swapped out on a tool or device, allowing for different functions or uses. This design feature is common in various products, such as screwdrivers, power tools, and camera lenses, where users can change the head to suit specific tasks or preferences. The primary advantage of interchangeable heads is versatility. Users can adapt a single tool for multiple purposes without needing to purchase separate items. This not only saves space and money but also enhances efficiency, making it easier to tackle a variety of projects with one adaptable device.