DEWALT D28114N 4-1/2-Inch/5-Inch High Performance No-Lock On Paddle Switch Grinder 11,000 rpm DEWALT built G55 motor designed for faster material removal and higher overload protection No lock-on paddle switch prevents the user from locking the grinder on Dust ejection system provides durability by ejecting damaging dust and debris particles Quick-change wheel release allows tool free wheel removal Complete electronic control provides multiple advanced technology features