Review on LENOX Tools Bi Metal Arbored Technology Cutting Tools ~ Hole Saws & Accessories by Jason Dahlkemper

A cutting tooth in the chisel is located along the weld. Once welded, the tooth disengages it from the others, causing it to "bite" and poke a horrible, oversized hole and then snap. I failed "two" crowns due to the same error. Do not buy. you have been warned