Review on Enhance Your Cutting Performance with Lenox Tools 2995858CG Master Grit Carbide by Carlos Burrows

Not sure what the walls and ceiling of my 1930's are constructed of, but it's plaster about 1/2 inch thick drywall over what to be seems like some kind of 1/2" cement board. I shudder at how much my house weighs. In any case, a regular hole saw is good for no more than two holes before the teeth are completely gone. This thing will do though Out A regular hole saw is probably better for wood, but will do for cement board or something similar.