DeWalt High Performance Angle Grinders with E-Clutch E-Clutch Activates in less than a tenth of a second when a pinch/stall event is detected. Dust Ejection System provides durability by ejecting damaging dust and debris particles that enter the tool through the air intake vents. Power Loss Reset prevents accidental restarts following a power disruption when the tool is left in the "on" position. Power tool shuts off before overheating with Power-OffAdvanced Overload Protection. Pack of 1