Using these bits our team found that they performed flawlessly even on the toughest materials. The precision the bits delivered was unbelievable, resulting in a clean, flawless finish every time. These Amana Carbide Straight Plunge Production Cutting Tools are a must-have in any industrial and scientific setting, offering exceptional durability and consistency. However, the only downside is that they're a bit pricier than other bits on the market..