5pcs set: 5pcs 8mm Shank Half Round Bullnose Router Bit-Radius: 9.5mm(3/8"),7.95mm(5/16"),6.35mm(1/4"),4.76mm(3/16"),3.175mm(1/8") Unique Design: Anti-kickback design, totally enclosed and lubricated Material: Solid hardened steel body and industrial grade micro-grain carbide Special Treatment: Baked-on heat-resistant coating prevents the build-up of sawdust, resin and pitch. Suitable For: Hardwood, Chipboard, MDF Precise, designer profiles create smooth, detailed cuts, perfect for projects of any level of complexity. Note: The data are all measured manually, please allow 1-3cm error Due to differences in light and display, there may be some color differences, please refer to the actual item received.