• Made in Solid Carbide.
  • High quality and Extra long life.
  • Double-edged cutting design, excellent concentricity.
  • Shank Diameter: 6.35mm / 1/4"
  • Cutting edge diameter: 1/4",5/16",3/8",21/2"

Great product for a novice user

I bought these, but they were wrong for the application I wanted to do. The price was right, the quality is good, and maybe someday I can find an application where they will be useful. I think I have a router somewhere, but I needed to make a cavity with a drill for an inset hinge.

Worked good for the price