Review on Irwin Unibit2T Titanium Nitrate 16 Inch: Ultimate Drilling Power with Enhanced Durability by Joseph Meola

I needed to drill large holes in a sheet of steel. Conventional drill bits get stuck in the hole when they get close to fully drilling the hole. Adjustable round hole cutters and reamers can be dangerous when used by hand, and sometimes even when used in a power drill. All of these types can twist your wrist severely when used with your free hand. I decided to try this step and see how they work. It was delicious! I drilled a fairly large pilot hole with a twist drill and then started running the step drill into the hole. Cuts straight and doesn't stick at all. The hole he made was perfectly round and there were no burrs left on the face. It left a burr on the back of the metal, but I just made a very light drill with this backed step bit to knock off the burrs. Presto. A clean wonderful hole was quickly drilled. Now I really believe in step beats. This racquet also retained its sharpness very well. I highly recommend this product.