Toro 640-0127 Gear Driven Rotor Sprinkler Drive Assembly 127 Degree Arc - Considered the most durable, heavy-duty commercial sprinkler available, the 640 Series is the traditional, proven veteran for athletic fields and other large commercial applications. It is equipped with a standard rubber cover and offers a choice from five nozzles and twelve arcs. A variety of models are available including valve-in-head, check-o-matic and recycled.