Tungsten Carbide Blades put a quick sharp edge on dull or damaged knives. The carbide blades are reversible for extended life. Includes two pieces, one full set of blades. 

Replacement Instructions

1. Remove the Phillips head screw(s) and save for re-assembly.
2. Remove the plastic cover and save for re-assembly.
3. Hold sharpender in hand with head facing down. Insert one of the carbide replacement blades into the left-hand cavity and then place the other blade into the right-hand cavity, which will be on top of the first blade. The blades should form a "V" in the middle. Both blades are designed to be interchangeable.
4. Replace the plastic cover.
5. Replace the Phillips head screw(s).