EasyPro Stainless Steel Submersible Pump, TH250 4100 GPH Rugged motor - designed for long life, continuous duty operation; motor housing is corrosion-resistant stainless steel Low maintenance - pump casing is made from abrasion-resistant, fiber reinforced plastic for maximum life 2" female threaded outlet EasyPro 4100 GPH 115 Volt S.S. Waterfall and Stream Pump Stainless steel submersible pump is great for waterfalls and streams Rugged motor designed for long life, continuous duty operation Pump casing is made from abrasion-resistant, fiber reinforced plastic Vortex design prevents clogging Built-in overload and overheat motor protection