What type of bit is primarily used for cutting through hard products in nail enhancement?

The correct choice is carbide bit. Carbide bits are specifically designed for cutting through hard products used in nail enhancements, such as acrylics and hard gel materials. They are made from tungsten carbide, which provides a tough, durable surface that is effective for both shaping and reducing bulk on the nails. This type of bit is ideal for professional nail technicians who require precision and efficiency when working with hard materials, allowing them to achieve smooth, precise results.

In contrast, other bits serve different purposes. Diamond bits, while also effective for cutting and shaping, are usually used for finer detail work and polishing rather than for heavy-duty cutting through thick materials. Buffing bits are intended for polishing and finishing the surface of the nails, not for cutting or drilling. Sanding bands are used for smoothing and refining the nail surface but are not specifically designed for cutting through hard enhancement products like a carbide bit. Thus, for cutting through hard products effectively, a carbide bit is the preferred choice.