Using these bits, our team found that they produced precise cuts and held up WELL against even the toughest woods. We were impressed with the long-lasting durability and versatility of these bits .The design allowed for easy use and maneuvering, making them perfect for both industrial and scientific use. While they are a bit on the pricey side, the quality and performance make them a worthy investment. Overall we highly recommend these carbide router bits for all of your cutting tool needs..