Smart Meter Banana Socket Connection Wire Heavy Duty Insulation Piercing Probe Test Clip Fully Insulated Quick Pierce Testing Clips Multimeter Spring Load (SM01) Sharp and stainless steel needle can easily pierce the surface of cable Widely used about the non-destructive cable test in Auto, Power Industry Rated voltage/current: CE CATIII 1000V /MAX.10A, Connect method: 4mm socket connection Match with the test lead of Multi-meter or Oscilloscope for high voltage Rotating jack won't twist test lead while the needle is being screwed into wire