Create incredibly sharp and clean pencil tips with the Blackwing two-step sharpener. The sharpener has two holes: one for shaving away the wood casing and one for sharpening the exposed lead to a perfect point. A built-in stopper acts as an automatic brake, preventing over-sharpening. The sharpener's blades are made of high-carbon steel that is corrosion resistant and can stay sharp for thousands of uses. Two replacement blades are included in a compartment inside the sharpener.