<human>:  Is aluminum oxide a good choice for knife handle material?
<bot>: It depends on your intended use, as aluminum oxide is a very hard material that is often used in industrial-grade knives. It offers excellent durability and resistance to corrosion, but compared to softer materials, it can be more difficult to grip. In general, aluminum oxide is a good choice for knife handle material if you are looking for a hard and long-lasting material.