Premium Material: 8mm Router Bit for Premium Carbon Alloy Blade, 45 Carbon Steel Shank Router Bit, Strong and Durable, Balanced Precision for Smooth Operation. Multiple Uses: Shank Router Bit for Making Custom Molds, Bowls. Router Bit These Can Be Used on Solid Wood and MDF. Necessary Protective Measures When Processing Wood. Extremely Sharp Blade: Premium Carbon Alloy Blade Router Bit by Heat Treatment, Sharp and Durable. With Coated Surface, It Is Anti-rust And Has A Long Service Life. Main Function: The Small Bowl Cutter Will Create Concave Bowl Or Crater-Like Indentations In A Variety Of Materials, It Is The Ideal Tool For Making Custom Molds, Bowls. Router Bit Size: Perfect Compatible Carving Tool, Router Bit Shank Diameter 8mm, Width 1-3/4"; Radius 1.65". 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.