Our most popular solid carbide Spiral Bits at your fingertips in a safe, economical package! Upcut set including 3/16in, 1/4in, 5/16in, 3/8in and 1/2in bit diameters. Ideal for use on all soft and hard wood, plywood, laminates, MDF and plastic materials, with your CNC or handheld router. Remember: upcut bits provide fast chip ejection and deliver the finest finish on the lower surface of the workpiece. Downcut bits are the best choice where an ultra-smooth finish on the upper surface is the highest priority.From the ManufacturerOur new high performance solid carbide spirals are engineered for faster feed rates and long cutting life. New super micrograin carbide formula offers extremely sharp and longer lasting cutting edges. Low helical grind shears material with more efficient chip ejection. The tool works less, runs cooler and out performs the competition. Our new precision machinery was designed and built to CMT spec’s. We now manufacture solid carbide spirals with the tightest tolerances in the industry. You won’t find a better performance in tooling.