High power 4 HP (horsepower) motor with overload protection provides higher operating speeds under load. Low profile gear case allows for work in tight areas. Epoxy coated field and armature provides long service life against abrasion from airborne debris. Automatic turn-off brushes shut down the tool when brushes need to be changed to avoid tool damage. Brush window allows for quick brush replacement. 2-position side handle provides improved ergonomics for specific applications. 7" tool-free guard allows for quick and easy guard changes.