| 摘要 |
An adaptor for attachment to a plunger lock unlocking tool of a type which grasps the external surface of the unlocking pin of a plunger-type lock and pulls the pin to the unlocking position, said adaptor enabling the tool to be used to unlock a plunger lock of the type in which the unlocking member is a hollow pin which is grasped internally for pulling to the unlocking position.
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