Review on Acekit Bi Metal Strenthen Variable Ceiling Cutting Tools in Hole Saws & Accessories by Eric Pruett

This is an excellent product. It works well and cuts easily, much easier than many other hole saws I've used in the past. This is best used in a drill press due to the weight of the unit, but can easily be used for drywall or board in a hand drill. You just need a hand drill powerful enough to power it. The only negative I can say is that the kit doesn't come with any assembly instructions, but it was easy enough to figure out how to install the mandrel and drill assembly.