可靠性高
290 系列坚固耐用，每次使用时都与新机器无异。
动力重量比极佳
290 系列扳手采用大型锤冲击机构，使用时得心应手，毫不费力。
增强控制能力
这款工具动力重量比高、带有功率调节器，操控性好，使用轻松。
多种固定方式
290 系列具有多种传动轴组合，能够进入难以够及的空间，与套筒连接更坚固，扭矩损失更小。
<table>
<thead>
<tr>
<th>Model</th>
<th>Configuration</th>
<th>Actuation</th>
<th>Drive Size</th>
<th>Drive Type</th>
<th>Forward Torque (ft-lbs)</th>
<th>Forward Torque (Nm)</th>
<th>Max Reverse Torque (ft-lbs)</th>
<th>Max Reverse Torque (Nm)</th>
<th>Blows per minute</th>
<th>Free Speed (RPM)</th>
<th>Impacting Sound Level dB(A) -- ISO15744 (pressure/power)</th>
<th>Free Speed Sound Level dB(A) -- CAGI/ANSI S12.41 (pressure/power)</th>
<th>Vibration Level m/s2 (K)</th>
<th>Weight (lbs)</th>
<th>Weight (kg)</th>
<th>Length (in)</th>
<th>Length (mm)</th>
<th>Air Inlet</th>
<th>Min Hose Size (in)</th>
<th>Min Hose Size (mm)</th>
<th>Air Consumption @ Load (cfm)</th>
<th>Air Consumption @ Load (L/min)</th>
<th>Average Air Consumption (cfm)</th>
<th>Average Air Consumption (L/min)</th>
<th>PSI</th>
<th>Bar</th>
</tr>
</thead>
<tbody>
<tr>
<td>290</td>
<td>Pistol</td>
<td>Trigger</td>
<td>1 in.</td>
<td>Square, Thru-Hole</td>
<td>N/A</td>
<td>N/A</td>
<td>1600</td>
<td>2169</td>
<td>800</td>
<td>6000</td>
<td>N/A</td>
<td>101.6 / 112.6</td>
<td>22.7 (2.6)</td>
<td>21.9</td>
<td>9.93</td>
<td>9.75</td>
<td>248</td>
<td>1/2 in.</td>
<td>1/2</td>
<td>13</td>
<td>55</td>
<td>1557</td>
<td>10</td>
<td>283</td>
<td>90</td>
<td>6.2</td>
</tr>
<tr>
<td>290-S</td>
<td>Pistol</td>
<td>Trigger</td>
<td>No. 5</td>
<td>Spline, Ball Locking Mechanism</td>
<td>N/A</td>
<td>N/A</td>
<td>1600</td>
<td>2169</td>
<td>800</td>
<td>6000</td>
<td>N/A</td>
<td>101.6 / 112.6</td>
<td>22.7 (2.6)</td>
<td>21.9</td>
<td>9.93</td>
<td>10</td>
<td>254</td>
<td>1/2 in.</td>
<td>1/2</td>
<td>13</td>
<td>60</td>
<td>1699</td>
<td>10</td>
<td>283</td>
<td>90</td>
<td>6.2</td>
</tr>
</tbody>
</table>
