Knife bolsters are the thick, typically metal, portion of a knife blade that sits between the handle and the blade itself. They are designed to provide a sturdy and balanced foundation for the knife, protecting the handle from damage and providing extra weight to help with cutting tasks.

In addition to their functional purpose, knife bolsters can also add an aesthetic element to a knife. They may be adorned with intricate designs or engraving, or simply polished to a high shine for a sleek and elegant appearance.

Overall, knife bolsters serve an important role in the functionality and design of a knife, providing both protection and balance for the user.