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. Use the bit to create a 1.65" radius concave bowl or crater-like indents at 1-3/4" diameter across and 1/4" deep. CNC compatible. 1/16" thick carbide. Two flute carbide cutters with ball bearing guides. Specification: Shank diameter: 1/2" Cutter diameter: 1-3/4" Cutting length: 3/8" Over length: 2" Largest diameter: 1-3/4" Raidus: 1.65" Number of flutes: 2 Package Includes: 1 Piece Router Bit