High power 4 hp (maximum motor hp) 6,000 rpm motor with overload protection provides higher operating speeds under load * Epoxy coated field and armature provide long service life against abrasion from airborne debris * Durable magnesium gear case is ergonomically shaped for easy control * Automatic turn-off brushes shut down the tool when brushes need to be changed to avoid tool damage * 3 position side handle provides improved ergonomics for specific applications 6,000 rpm is a midrange speed for use with multiple accessories