Silvertronic SIL134396 Miniature Cable Piercer/Back Probe This accessory kit features easy access miniature back probes into miniature cable piercers The four color coded easy access back probes allow connectivity to fuel injectors, MAP and TPS sensors, well as any weather pack seal type connectors Adding the adapter to back probe pins allows the user to pierce small cables, using as much or as little pressure as required Modular design is compatible with any industry-standard, 4mm banana plug test lead (shrouded or unshrouded)