AS a result of using this industrial and scientific hole saw I found that it easily cuts through both plastic and galvanized materials without any hassle. The bi-metal design eliminates the need to change out bits constantly, which is a great time-saver. The blade quality is top-notch and has held up well through multiple uses .However, the price point is slightly higher compared to other hole saws in the market. Nonetheless, it`s a great investment for anyone who wants a reliable hole saw for their DIY projects..