Utility Blade Carbid50pk The longest lasting utility blade in the world. DEWALT Carbide blades stay sharper 5 times longer than traditional competitive blades. DEWALT Carbide blades are designed to deliver increased blade life, maintain first-cut sharpness and offer snap resistance three key factors that today's professionals demand. Longest lasting blade on the job site Improved durability and wear lasts more than 5 times longer than competitive utility blades Tungsten carbide powder deposited through a high powered laser Tungsten carbide durability and hardness is second only to diamond