| 摘要 |
A padlock consisting of an elongated lock casing, comprising an inner, solid member and an outer shell fitting over the same. The outer shell is made of a material protected against drilling or the like burglary attempts. The inner, solid member is made of a relatively soft material such as iron or other non-ferrous metal. A U-shaped shackle is adapted to be inserted into the casing and locked by a key-operated, cylinder-type locking device installed at one end of the lock casing.
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