Powered by compressed air, the patented Venturi powerhead generates 242" (615 cm) of simultaneous wet/dry pick-up power. There are no moving parts, no sparks and absolutely no motor maintenance. This Tornado Taskforce® is ideal for heavy-duty applications requiring aggressive suction power. Perfect for high volume recovery of wet material, and with its thoughtful external filter, can recover dry material as well, without stopping for a filter change. The unit is shipped standard with a 3/16" air jet installed but we also provide a 7/32" and 1/4" fitting for recovery of heavier materials. Add the 90660 hose and tool attachment set to complete the set up and watch your maintenance headaches go away.