ITEM NAME:2pcs Straight Shank Flush Trim Router 3/4inchCutter Bit Woodwork Milling Tool Description: Shank diameter: 8mm Straight router bit, wood milling cutter. Solid hardened steel cutters with anti-kickback design. Build-up & Heat Resistant PTEE Coating. Cemented car.Build-up & Heat Resistant PTEE Coating. #3 Size (Cutting LengthxOverall Length): approx. #4 Size (Cutting LengthxOverall Length): approx.