| 摘要 |
<p>The handpiece (100) has a drive mechanism for a tool (12), where moved or movable parts of the handpiece are provided with a coating comprising chromium nitride or a mixture of titanium nitride and gold. A device is provided for selective clamping and/or coupling of the tool, which is moved from the drive mechanism. The units of the device are provided with chromium nitride and/or a mixture of titanium nitride and gold.</p> |
