Amazing tool for drilling solid brick. I needed to install a dryer vent and was afraid of damaging the bricks in the house. I drilled from the inside out. The brick is 45 years old and very hard I pulled out my old B&D 3/8" drill bit and got to work. The chisel worked surprisingly well. I broke my drill head about halfway through! So I had to run to the store to get a new drill bit 1/2 "Once I got home and set the drill on my new drill bit, I got back to work. In no time I snapped off the first piece of brick to continue cutting (it's only 2" deep After it broke off I went back to it and removed the remaining 2" in about 5 minutes) Bricks, you can't even tell the bit was used on something that hard as it shows almost no wear. Consider me impressed and my wife happy!