As a result of using this product I found that it outperformed all the other hole saws I have used .It cut through metal and wood with ease and lasted longer than expected. The carbide tips are durable and can cut through tough materials without losing their sharpness. The only downside is that it can be a bit expensive compared to other hole saws in the MARKET. Overall, its a great investment for anyone in need of high-quality hole saws and accessories..