The stainless steel spherical knob cutter is an exact fine-cutting tool. The spherical blades allow for the ideal combination of strength and precision, making for a clean "biting action" into the material. These cutters are designed to cut cleanly into the trunk and branches and are also ideal for reducing knobs, lumps, or branch stubs. The spherical cutter head allows for a precise cut, minimizing damage to the surrounding area. The spherical blades create a very strong tool.