Description: Industrial Quality Straight Router Bit Cutting Diameter: 1/2-inch; Shank Diameter: 1/2-inch Carbide cutters; solid hardened steel bodies with Anti-Kickback Design ; Individually computer balanced Cuts all composite materials, plywoods, hardwoods, and softwoods (Color of router bits will be shipped at random.) Use on CNC and other automatic routers as well as hand held and table mounted portable router Specification: For 1/2x1/2x1-1/2, Number of Flutes: 2, Cutting Diameter: Approx. 12.7mm (1/2"),Cutting Length: Approx. 38.1mm(1-1/2") For 1/2x1/2x2, Number of Flutes: 2, Cutting Diameter: Approx. 12.7mm (1/2"),Cutting Length: Approx. 50.8mm (2") For 1/2xx1/2x2-1/2,Number of Flutes: 2, Cutting Diameter: Approx. 12.7mm (1/2"),Cutting Length: Approx. 63.5mm (2-1/2") For 1/2x1/2x3,Number of Flutes: 2, Cutting Diameter: Approx. 12.7mm (1/2"),Cutting Length: Approx. 76.2 (3") Package Includes: 1 Piece of Extra Long Straight Router Bit