The more commonly used and easily recognized tools on the planet, the wire cutters is a must have for any garage or tool shed. One of the most widely known forms or types of pliers remains mostly unchanged since it was originally designed, because it gets the job done. Diagonal pliers or wire cutters or diagonal cutting pliers or diagonal cutters or side cutters or dikes or Nippy cutters, are pliers intended for the cutting of wire. The plane defined by the cutting edges of the jaws intersects the joint rivet at an angle or "on a diagonal", hence the name.