Recently, it is difficult to insert the key of my security door into the door opening, what can I do

Updated on Security door 2024-04-27
2 answers
  1. Anonymous users2024-01-23

    Inject a little oil into the keyhole and insert the key several times to evenly coat the keyhole, so that it will be much better when you use it again.

  2. Anonymous users2024-01-22

    Coat it with engine oil or butter, not vegetable oil, which will corrode the lock cylinder.

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