Baytory Professional Pattern Flush Trim Router Bit Set With 1/4 Inch Shank, 4Pcs Precision Cuts: 4Pcs 1/4 Shank Pattern Flush Trim Router Bits Set, Carbide Template Top Bearing Flush Trim Bits Set, Prevent Tear-Out, Perfectly Suitable for Light Work, 1/2 inch Cutting Diameter, Flush trimming machine drill bit insert cutting length:11mm, 20mm, 25mm, 38mm. High Quality: 1/4 Inch Shank Pattern Flush Trim Router Bit, high-quality alloy steel bodies with C3 micro-grain tungsten carbide blades cutting with precision and ease. For Cutting Various Wood Materials: This flush trim router bit can cut and trim solid wood, density boards, MDF, chipboard, splint, and more. Avoid cutting metal and non-wood material. Versatile Woodworking Tool: This flush trim router bit set is preferred choice of professionals and hobbyists alike. Useful for trimming, grooving, etc. Such as DIY project, lettering, and other template work. Wide in Use: Flush trim router bit 1/4 shank, designed for desktop engraving machines (such as CNC hand-held and table-mounted router). It's cannot be used in electric drill drill machines.