Freud 1/2" (Dia.) Flush Trim Upcut Spiral BitFreud's Solid Carbide Flush Trim Spiral Bits are the best choice for your heaviest trim applications, especially in abrasive materials like melamine, particleboard or solid surface. The upshear spiral provides an extra clean bottom edge and fast cleanout of dust and chips from the cutting area. Perfect for any flush trim or pattern application, using hand held or table mounted routers. Spiral flush trim bits deliver very fast, clean cuts in thick tops