uxcell Router Bit 1/2 Shank 1 inch Cutting Dia. Round Over Corner 2 Flutes Carbon Steel for Woodworking Milling Cutter Tool Shank Diameter: 12.7mm/1/2 inch; Cutting Diameter: 20mm/0.8 inch Cutting Depth: 25mm/1 inch; Total Length: 63mm/2.5 inch; Material: High Carbon Steel Solid hardened tungsten steel body with anti-kickback design. Can be used without the bearing as a standard straight bit, great for combined plunge-cutting and pattern/template routing. For increased work piece visibility, use shank bearing flush trim bit in a handheld router allowing the template to be positioned on top of the work piece.