Mode 3 - 0-2700 RPM and 0-3200 IPM. Mode 4 - Auto-Shut Off Mode: Prevents over tightening of fasteners. 1 x Milwaukee M12FIW38-0 12v M12 Li-ion FUEL 3/8in Impact Wrench Body only. Drive Control : 4 mode w/ Auto Shut-Off Mode.
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