Kit includes screw-on modular adapter (A052), use to adapt TPI screw tip test leads for use with modular accessories. Sharp steel test prod (A054), use to probe connections, connectors, and terminals. Modular back probes (A057). use to check wiring harnesses and molex type connectors. Modular crocodile clips (A066), use to test jumpers, terminals, and ground lugs. Modular grabbers (A067), use to attach to terminals, including terminal strips, and hard to reach places. Shutter plug to fixed shroud lead set (A081), safety double insulated CAT IV 600V 10A, CAT III 1000V 10A CULus 61010-1/IEC 61010 listed, flexible multi-strand wire, long life silicone insulation, flame resistant.