Did the customer ordered the correct one?
-----4 Nozzles of Bluechips & 4 Nozzles of Schaffner have problems.
For Bluechips, he need the old fat form nozzle, but you sent the new slim form nozzle
For Schaffner, he cannot connect nozzle's hole onto the base. He said the nozzle's hole is a bit too small.
Is it you want to return the goods ask for credit note?