Using this product, our team found that it performs exceptionally well with a wide range of materials. The precision and durability of these Industrial and Scientific grade drill bits allow us to take on any task with ease. The bi-metal construction ensures maximum strength and longevity, while the sharp and precise edges cut through even the toughest materials. The only downside we noticed was that they are on the pricier side, but when it comes to quality, it's worth every penny.