This 1/8 inches tungsten carbide carving bit is optimal for shaping, smoothing or material removal from hardened steel, stainless steel, cast iron, nonferrous metals, fired ceramics, plastics and hardwoods. A high-speed drill bit composed of tungsten carbide, the second hardest material after diamonds Optimize rotational velocities - employ elevated RPMs for hardwoods, moderate RPMs for metals and significantly reduced RPMs for plastics to ensure material integrity and tool efficiency Utilize the lateral edges of the drill bit, as opposed to the terminal point, to optimize cutting efficiency and precision