This Wire Terminal Tool Kit is designed to release and extract wires from terminals without damage. The single blades have a bevel ground onto the end for working on small terminals found on newer vehicles. Red is specially designed for Pak-Con and WeatherPak terminals. Silver has prongs to depress the 'barbs' on conventional terminals. The handle slips over the probes to protect your hand as well as provide extra leverage. This complete kit comes in a sturdy blow-molded case for protection and long life and is a must-have for any do-it-yourselfer's toolbox.