Review on DEWALT DW5245 4 Inch 12 Inch Carbide: Ultimate Cutting Performance for Precision Projects by Jonah Koehnke

I needed this bit to run the power cable from the garage to the gate operator. Of course, the concrete is about 75 years old, but the hard metal broke after about 1 cm of penetration! It took about half an hour to go through every inch of the bit. Luckily we managed to do it because local hardware stores don't have anything like this! After that, of course, he went to the trash can.