Dear Partners,thanks so much for your support with viborg .now we are inform that the IEC (C15/16) the copper PINs we are revised to a patent version .
from the indication punch coopper to a allotype Copper with CNC finished, fit the stainness steel spring can pass 5000times fatigue test .
for more the screws in new version will be two sets hex brass gold plated scress ,press the wire more tigher and stable.
the old version will stop after Feb 2022.
Below picture was the specication: