Baorder 1/4 Inch Shank Flush Trim Router Bits Top Bearing Router Bit Woodworking Milling Cutter Tool Flush trim router bit set, 1/4 inch shank,1 inch cutter depth, Cutting diameter 1/4"1/2"3/8"5/16" 1/4 inch shank top bearing flush trim router bits are made of C3 Micro-grain tungsten carbide cutter with heat resistant Teflon coating for long life use Double straight flute type, clean and neat surface without glitches,Cutting sharp,smooth rotation, brisk operation Works great with all kinds of materials and surfaces, like woods, mdf, particle boards, plywood, panels, softwood, hardwood and many others Use on CNC and other automatic routers as well as hand-held and table-mounted portable routers color: red Packing size: 18mm*18mm*100mm Quantity delivered: 4 pieces