The DeWalt N439270 Impact Driver Mechanism Assembly converts the rotational movement of the motor into rotational force and hammering force. It operates through a set of cams and springs that translate the rotational movement into a series of hammering motions which are used to drive the fastener. This impact mechanism enable the driver to overcome tough materials and fasten large fasteners with less effort and fatigue. The advantages include enhanced the torque high speed, and capability to perform complex operations.
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