These are great for woodworking! Reverse Helix is really gentle on wood, and many of my other pieces keep up with it, as opposed to standard helix end mills. I make wood bodied mics (spring mics to see what these end mills can do) and these end mills are essential. The price has gone up lately but they are worth it. I get about 40 hours of cutting time at 26,000rpm on composite woods, ash and harder woods (Ype/Ironwood) from each bit.