Description: The Trim Router Bit Manufactured from solid hardened alloy,durable and practical to use C3 Micro-grain Tungsten Carbide Cutters Solid Hardened Steel Bodies with Anti-Kickback Design Build-up & Heat Resistant Coating Industrial Quality Router Bits,utilized for the most rigorous industrial applications Specification: Material: Hardened Steel Overall Length: approx. 50.8mm/ 2inch Shank Length: approx. 16mm/ 0.63inch (5/8'') Shank Diameter: approx. 19mm/ 0.75inch (3/4'') Bore Diameter: approx. 6.35mm/ 0.25inch (1/4'') Package Includes: 1 Piece Router Bit