Description: Made by high speed steel and tungsten carbide material, more durable & strong For processing of metallic and Non-metallic surfaces Great for craft, airfix modelling, home, repairs etc you name it Using an engraving machine / mini-Drill forms of cutting part provide efficient processing Perfect for all sorts off jobs like model making,compatible with other multi-tool machines Specification: Material: HSS + Tungsten Carbide Handle Diameter: Approx. 3mm/ 0.12inch Handle Length: Approx. 4cm/ 1.57inch Package Includes: 6 pieces Burr Router Bits Note: The colors may be different for the different display, please understand Please allow 1-3mm error due to manual measurement, make sure you do not mind before you bid