| 摘要 |
<p>The present invention relates to a hole cutter capable of easily detaching a cutting chip by moving a hole cutter shaft forward. According to the present invention, the hole cutter comprises: the hole cutter shaft pushing the cutting chip by moving forward since rotational movement is possible; and a hole cutter blade corresponding to the hole cutter shaft. In addition, a stopper fixing a combination between the hole cutter shaft and the hole cutter blade is inclined, and a protruding portion is formed in a front portion of the hole cutter shaft. A prism-shaped hilt is formed on the hole cutter blade.</p> |
