Features and Benefits: Set contains three sets of (2) jumper wires for three different sizes (14,16, & 20 Contact Sizes) & 4 terminal tools to remove damaged terminals. Jumper wires are used to test possibly defective terminals and connectors and to check current flow. Terminal tools are used to release defective contacts. 3 different size jumper wires cover over 90% of Deutsch applications. Multiple jumper cables for each side allow user to test different circuits at the same time.