1Dovetail Edging Router Bit: This router bit is suitable for trimming all kinds of wood, making it rounder and making your job easier. 2Adjustable Depth: The router bit can adjust the cutting depth of the blade according to the actual needs, easy to use. 3Tungsten Steel Alloy: This router bit is made of tungsten steel alloy material, and the surface is oxidized to make it not easy to crack or rust. 4Incisive Blade: This router bit has a very incisive blade for quick wood chip removal, saving time and effort on the job. 5Easy Installation: This 1/4in shank dovetail router bit is compact and easy to install, often used in woodworking grooving, etc. Item Type: Woodworking Dovetail Router Bit Material: Tungsten Steel Alloy Use: For woodworking grooving or other woodworking Surface Coating: PTFE coating Shank Diameter: Approx. 6.35mm / 0.25in 1 x Woodworking Dovetail Router Bit 1. Please avoid cutting metal and non wood materials such as steel, iron and sand. 2. Please keep it away from water to avoid rust.