| 摘要 |
A paper punch which has a body defining a gap for insertion of the material to be punched and has at least one punch hole at the bottom of the gap and includes guides for guiding a punching element across the gap into the punch hole, also includes at least one cylindrical punching element which is disposed to be guided into the punch hole and has a cutting end with a cutting edge which extends helically along at least one-half of the circumference of the punching element. Preferably the punching element is hollow and is formed from a shaped sheet of metal.
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