What is a notable feature of tungsten carbide instruments?

The notable feature of tungsten carbide instruments is their enhanced durability and strength, particularly compared to traditional stainless steel instruments. Specifically, tungsten carbide is often used in the areas of cutting and clamping instruments because it provides better edge retention and wear resistance. This feature allows them to maintain sharper cutting edges over time and reduces the frequency of necessary sharpening.

In the context of the provided choices, one correct feature of tungsten carbide instruments is that they are indeed often recognized by having gold handles. This distinctive appearance helps to identify them among other surgical instruments. The gold handles not only serve as visual markers but also indicate the presence of tungsten carbide due to their enhanced properties.

The other features mentioned, such as being non-disposable or used exclusively in orthopedic surgeries, do not accurately encapsulate the defining characteristics of tungsten carbide instruments. While they are indeed non-disposable and can be used in various types of procedures beyond just orthopedics, these attributes are not what sets tungsten carbide apart in the context of the question. The weight comparison to stainless steel may vary depending on the specific design of the instrument, but typically, tungsten carbide instruments are designed to be ergonomically balanced, which doesn't solely define their identity in relation to weight.