After trying this hole saw, I can attest that it is an impressive tool for industrial and scientific purposes .The quality of the build is top-notch, and it made easy work of cutting through tough materials. The design allowed for excellent precision and control making it easy to shape the hole exactly as required. The only drawback was that it was a bit heavier than expected, but this is a small compromise for the power it brings to the job. Overall, an excellent and reliable tool for any cutting needs..