Based on my experience, the Speedbor 88716 2000 Shank Boring is not up to par with the industrial and scientific standards that I have come to expect from a cutting tool. While the design looks promising, the actual performance fell short of my expectations. One pro of this product was that it arrived in a timely manner. However, the con is that the bit is not durable and dulls quickly, making it difficult to achieve accurate and clean cuts. Overall, I would not recommend this product to fellow