The 4-mm cutter offers the ideal combination of a small cutter diameter that allows you to make deep routing passes. The two-flute upcut geometry is suitable for a wide range of wood species, from MDF and plywood to all hardwoods. The solid carbide composition keeps the cutting edge sharp even after hours of use. The 15-mm cutting length provides extra reach with a small diameter bit, stability during deep roughing passes, and good cut finish on deep finishing passes. Designed for high feed rates with good cut quality in a wide range of materials.