Description: Made with industrial micrograin carbide, provides increased strength and utmost resistance, for multiple use, smooth and detailed finish. Fits for professional electric drill, bench drill. Rpm close to 800-1000, while adding water for cooling is an advantage. Making long tenons for entry wooden door. Baked on heat resistant coating prevents build-up of sawdust, resin, and pitch. CNC compatible. Two flute carbide cutters with ball bearing guides. Specification: Shank diameter: 1/2" Over length: 2" / 1-3/4" Cutter diameter: 2" / 2.3" Bearing diameter: 1/2" Cutting depth: 7/10" / 3/4" Package Includes: 2 Pieces Router Bit