Major Electronix offers a wide selection of test leads and patch cords from Mueller. Mueller Test Leads are available in a variety of lengths and configurations. With the wide range there is sure to be a test lead that meets your needs. Mueller test leads are made to attach your equipment to your testing device, while patch cords have connectors on both ends to attach one piece of equipment to a second piece. Several different versions can be used with meters from many different manufacturers, such as Hewlett Packard or Hitachi. For the full listing, see the Test Lead to Meter Cross Reference chart. These test leads can come with different sizes of wire, or even with coaxial cable. The hook up wire is tinned copper wire with PVC insulation, while the versions with coaxial cables are made to meet military standards. Most are available in red or black versions. Test lead sets of 5 or 10 pieces are also offered, featuring alligator clips on both ends.