These burrs are made of high speed steel for high hardness, high abrasion resistance and high heat resistance.
There are total 10 pieces single cut burrs in various shapes and sizes that you can use for many purposes
3mm round shank would fit many electric powered and machine tools.
This set of rotary burrs could be used on wood, plastic and many other soft materials.
Widely used for carving, shaping and for the removal of sharp edges or corners, burrs and excess material
10pcs Set HSS Titanium Routing Milling Rotary Burrs File Cutter Wood Woodworking Carving Carved Knife Cutter Tools Accessories B07VX1H671