Myers 3ST152-20PLUS-P4 20 GPM 1.5 HP 3 Wire Predator Submersible Pump Top-of-the-line 4-Inch submersible pump is unequalled in the marketplace Features the high-thrust PENTEK XE motor for the ultimate in power, efficient performance and longer life. Thermal overload and lightning protected Stainless steel shell, discharge bowl, shaft and coupling, wear ring and suction screen - all lead-free Field serviceable, threaded pump assembly Self-lubricating impellers resist abrasion from grit and sand -Teflon impregnated staging proven to outlast the competition