I recently purchased a hole saw connector and I am extremely satisfied with its performance.As a result of my tests, I determined that this product is perfect for those in the Industrial and Scientific field. The connector allowed me to cut through concrete with ease providing an efficient solution to my cutting needs. The only downside I can see is the price, as it is a bit more expensive than other options on the market. Overall, I highly recommend this product to those in need of a reliable and durable hole saw connector..