CMT 191.000.02- 5 PIECE SOLID CARBIDE UPCUT SPIRAL 1/4-INCH & 1/2-INCH SHANK ROUTER BIT SET

From the Manufacturer:

Our 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.

Spiral bits are unsurpassed for cleaner cuts in ordinary or difficult materials, softwood, hardwood, plywood, composites, etc. Due to their spiral cutting edge which stays in continuous contact with the workpiece, these bits give a smooth, chatter-free cutting action, unlike conventional bits which have intermittent contact with the workpiece. Ground from the finest micrograin carbide stock, CMT's spiral bits feature the latest in bit geometry.