This hole saw exceeded our expectations! Using this product, our team found that it cut through tough materials like butter. The bi-metal feature gives it a longer life than our previous saw. It saved us so much time and energy. Our only issue was the price being a bit steep. However, the long-lasting durability justifies the cost. As an Industrial and Scientific tool, we highly recommend the MaxTool Plumber Bi Metal Cut Depth for all your cutting needs.