I would give this product 2.5 stars if I could. Although the bit was delivered quickly, well packaged, in the right size and made of hss steel as described, it was not sharpened properly. I don't understand the problem? When you make drills, you might think you need them to drill a hole. I'm just saying you wouldn't want to sell a lightbulb that didn't light, would you? what kind of money would you make When this drill was made they did not provide the proper clearance behind the cutting edgeโฆ