Review on Premium 8pcs Double Cut Solid Carbide Burr Set for Die Grinder Drill - Ideal for Metal Wood Carving, Engraving, Polishing, Drilling - 1/4 Inch Shank by Bob Roberts

There was a self leveling sander attachment to make standard posts adjustable by drilling holes (which GM requires you to do) to get very precise alignment. .This bit has lasted me 28 years and I lost it when I got new tool kits. Bought this kit and it is identical to my rig. And this kit cost less than a bit, about $65 in 1993 for just 1 bit. For the money you can't go wrong. Used it to mount a winch in a car trailer, pulled all the mounting hooks out of a 1/2 inch thick sheet of steel and munched it like popcorn. The drill was in the grinder at 65,000 rpm and had no deflection. Perfectly balanced, withstands heavy loads and keeps swinging. no blunting of the teeth. self-cleaning so the metal doesn't get caught on the bit (wear safety goggles or you'll go blind!) Identical to the snap-on bit for 1/100000000 the cost. You will not be disappointed with this set. Easily lasts 15 lives!