These Forstner bits produce smooth, splinter-free holes in hardwoods and softwoods. What makes the real difference is that they drill faster and require less effort than any comparable bit. The reason behind the increased performance is the FISCH Wave Cutter technology. This unique design significantly reduces friction at the cutting rim. Fisch claim a 25% increase in improved drilling performance and improved chip removal. These bits will give you tear-free, accurate, flat bottomed, blind holes with perfectly smooth sides every time. The shanks of the bits have three flats for a better than ever secure grip in a drill chuck. Forged in Austria.-bg