What type of bit is commonly used for refining nail enhancements?

The type of bit that is commonly used for refining nail enhancements is typically a specialized bit designed to create a smooth and refined finish on the nail surface. Among the options provided, fiberglass is specifically used for enhancing the durability and strength of nail enhancements rather than as a bit for refinement.

In contrast, diamond bits are known for their durability and ability to shape and smooth surfaces effectively, while ceramic bits are praised for their smoothness and less heat generation during procedures. Metal bits can also be used for this purpose but may not provide the same level of finish as a ceramic or diamond bit. Ultimately, while all these tools play a role in nail enhancement, a refined finish is best achieved with either diamond or ceramic bits, which are specifically designed for that detailed work.