The top-mounted guide bearings on these router bits make them ideal for grooving, lettering and dadoes, as well as any other template work where the template is mounted on the top face of the workpiece. Cuts all composition materials, plywoods, hardwoods, and softwoods. Use on CNC and other automatic routers as well as hand-held and table-mounted portable routers.
Features TiCo Hi-Density carbide for longer bit life and a flawless finish.
Perma-SHIELD Non-stick Coating protects from heat, gumming, and corrosion.
Each bit is computer-balanced and precision-ground for the smoothest possible cuts.
I use these for pattern cutting .75" pine. I have broken 2 right between the cutting blade and the bearing. The first one lasted probably 300 cuts but the second one only lasted one day for around 40 cuts. I would buy it again but only for hobby cutting and not thick wood. I now have a tickler brand bit and still hard charging 300 cuts later.