BRUSHLESS MOTOR, 1/2’’ SQUARE TOOL HOLDER, ELECTRONIC SPEED ADJUSTMENT, STEP SPEED SELECTION, REVERSE ROTATION, BUILT-IN LED LIGHT (4 LIGHTS), BELT CLIP, VARIABLE TORQUE: 35 NM / 130 NM / 200 NM / 300 NM, ADDITIONAL ANTI-VIBRATION HOOK FOR 4AH BATTERY, MAGNESIUM HEAD FOR BETTER HEAT DISSIPATION, EFFICIENT VENTILATION SYSTEM FOR ENGINE COOLING