A man demonstrates how to make a difficult cut using a serrated pocket knife.
A man is showing how a small knife can cut through the toughest material.
In a store, there is a man is giving instructions on how to sharpen a knife. He slowly explain what to do.
A person holds a knife, touches the blade then picks up another object and begins rubbing the blade on the object.
A man is showing a blade with a blue handle and showing the serrated edges can be take off.
A man is holding a knife and showing how to sharpen it.
A man shows a serrated pocket knife and then he uses it as a saw.
A man is showing how well a sharpener works on a serrated knife.
A man demonstrating a knife by cutting a pair of scissors in half.
A man is giving a demonstration with a knife that is serrated in the middle.