Been using these all day and no problem. Love it.
I bought these to use in my Dremel for wood carving. So far I've carved in Oak and Holly and these things carve beautifully wih those hard woods without any sign of dulling the burrs. Plenty of shapes to choose from in this set to meet your needs.
I used these to carve two figures out of black walnut. They held up nicely. They are sharp and did not seem to dull at all. The shafts are straight and balanced and I was able to carve precisely. No complaints here.
You will not be disappointed in price or quality. These are GREAT!!!