| 摘要 |
<p>A paper punch includes a base and a raised portion extends from a top of the base. A handle is pivotally connected to the base. Two passages are defined through the raised portion and two punch head assemblies are respectively received in the two passages. Each punch head assembly includes a post and a punch blade. A lower edge of each of the punch blades has two tips and a recess is defined longitudinally in a lower end of each of the punch blade. A spring is engaged in each of the recesses of the two punch blades.</p> |
