Package includes: 6 Pcs 8mm Shank Versatile Round Over Edging Router Bit Set Industrial Quality Router Bits, C3 Micro-grain Tungsten Carbide Cutters. High-quality alloy steel bodies, with anti-kickback design, for a sharper longer lasting edge. Can be used without the bearing as a standard straight bit, Great for combined plunge-cutting and pattern/template routing Specifications: Shank: 8mm shank Material: Hard alloy Size:Please check pictures Package included: 6pcs x 8mm shank Round Over Router Bits Warm Tips: 1. Please always notice to add some coolant (like water) when operating, in case the material temperature will get very high even get smoke because of the long time operating. 2. When the woodworking is blunt, please replace the new tool, do not continue to use to avoid cutting tool breakage and injury accident. 3. When using the cutting tool, please select the blade length is greater than the work article. 4. When operating, the user is asked to wear safety glasses. 5.The cutter is sharp enough,please get away from children. 6.Please allow 0-1mm errors due to manual measurement.