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Cordless Impact Drivers - Impact drivers deliver a high spead stream of strong rotory hammer impulses to the driver bit. These battery powered impact drivers are very similar to the air powered impact wrenches auto mechanics use to install and remove lug nuts on your automobile wheels. Since the rotary force is generated by rotary hammer stirking the bit, the pressure required to drive a screw is greatly reduced. Very handy to drive fasteners which tend to seize as they turn such as lag bolts and long stubborn screws. They also work well to break loose stubborn nuts and bolts. Impact drivers typically do not have universal chucks like a drill, instead they have bit holders similar to the bit holders on a power screwdriver. Glossary: Chuck
The 27 models in the analysis Cordless Impact Drivers have an median letter grade of A.
There are 692 products in the Hand Drills category with an average letter grade ranking of B.
product links have additional data and information on the models.
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