Milwaukee 6116-33 4-1/2-Inch/5-Inch Small Angle Grinder with Slide Switch 12.0 amp, 1490 MWO motor provides high overload protection and power for difficult applications Advanced Electronics: CPT (constant power technology), OLP (overload limit protection) Electronic shut-off shuts down the grinder when the wheel is stalled in a pinch, providing greater control and reduced tool damage Debris baffles protect internal components by deflecting damaging debris out of the airflow at the intake vents Multi-port exhaust reduces motor burn-up by efficiently venting hot air out of the grinder