It is often used by mechanics to loosen larger screws (bolts) and nuts that are corrosively "frozen" or over-torqued. The direction can also be reversed for situations where screws have to be tightened with torque greater than a screwdriver can reasonably provide.
So it's widely used in construction and industiral fields.
PRODUCT DETAILS
Product Name
18V Cordless Impact Screwdriver
No-Load Speed
0-2200RPM
No-load Impact Rate
0-3000BPM
Max. Torque
160Nm
Chuck Size
1/4" hex chuck
Battery
2000mAh
1/4" keyless chuck
One battery fits with more than 150 power tools from the same platform