Which files are classified as general-purpose tools?

General-purpose tools are designed to handle a variety of tasks rather than being specialized for one specific function. Flat files and half-round files fall into this category because they have versatile shapes and cutting surfaces that can be used for different applications, such as smoothing and shaping materials like metal or wood.

Flat files are beneficial for smoothing flat surfaces, while half-round files combine the capabilities of both a flat file and a round file, making them suitable for working on both flat and curved surfaces. This versatility allows them to be more widely applicable in various projects, making them a staple in workshops and toolkits.

In contrast, the other types of files mentioned, such as double-cut, square, and round files, tend to serve more specific purposes. For example, square files are primarily used for filing right angles, while round files are ideal for rounding edges or enlarging holes. Their specialized nature limits their use compared to the broader application offered by flat and half-round files.