Review on ⛏️ Hanperal Concrete Shank Cutter - Optimized Cement Cutting Tool by Adam French

I installed a mini-thread with no air duct and needed a 3.5" diameter hole. This attachment worked great with the Makita Roto Hammer. Just apply light pressure and let the drill bit do its job If it was only 1/4 deeper (crown) then I could only drill through one side, however I had to use a longer masonry bit to go all the way through the wall so I knew where to drill from the opposite side In other words, the depth of this hole saw is slightly thicker than a brick.