When I tried this accessory, it drastically improved my hole saw experience. The quick change mechanism makes it easy to switch out hole saws without having to fuss with a wrench. The mandrel also provides a secure hold on the saw, eliminating the need for me to constantly readjust it while cutting. The only downside is that it's a bit pricey compared to other mandrels, but the convenience is worth it. Overall, I highly recommend this product to anyone who frequently uses hole saws.