I'm sure the product works fine, but it specifically states that it is suitable for holes smaller than 1.5 mm (0.06 inch). I have a deburring tool with a .08" hole and it's too big to fit in the hole. I need replacement blades for my tool because it's a great tool but the blade broke. So I bought these expecting to put in a blade and deburr the keyways again, but unfortunately, as I said, the shank is too big for the hole in my tool. When I brought them my calipers, they actually measured .120โฆ