Review on Metal Holesaw Cutter Aluminum 110Mm 200Mm Cutting Tools by Brian Rivenbark

I don't understand why it has so many good reviews, it's basically useless without a blade rotation lock with drill guide. It spins freely when you turn on the drill because the hole saw blade is simply attached through a threaded round hole, causing it to wobble and fall off instantly. I don't even understand how this product exists or how others have been able to use it successfully without tightening it between each print.