Quick handle-carriage removal for transport and storage. Low current draw. Thumb-operated safety switch. Negative pressure on/off switch. Dual steel operating trigger for left or right-hand operation. One-piece heavy duty, industrial powder-coated, steel handle for optimum durability. Welded frame for rugged, reliable performance. Non-marking, 2 x 6" ball bearing wheels. Variable position positive lock handle and vinyl grips for operator comfort and safety. 360-degree wraparound bumper, no tools needed for replacement.