18+-voltage * Speed 1 no load 1000 rpm; Speed 2 no load 1500 rpm; Speed 3 no load 2500 rpm * Electronic speed control; 3450 blows per minute * 1/4-Inch hexagon snap chuck * Max torque 3rd speed: 1,460-Inch-Pound, 2nd speed: 973-Inch-Pound; 1st speed: 531-Inch-Pound