A decent hole saw, but not impressive. No real clearance for material to exit the kerf (e.g. Milwuakee Big Hawg or similar). The saw doesn't lock well in the mandrel, so it's easy to change, but it can also rotate if you turn the saw upside down in the workpiece. The weld that holds the saw together is concave and slightly uneven so while it has held up well after a number of cuts this indicates poor workmanship. Summary: It works and if you need it, buy it, but your money is probably betterβ¦