Multi Tork Dual Geometry Socket Tool For Sta Rite Pentair System 3 (MTJ 770) jjelectronics Installed in the correct E2 Installed in the correct E2 Super Duplex setup and 36 square foot application give this part practical value because DE filter components work best when the replacement matches the intended system family and size closely A dual geometry socket tool helps service compatible retaining or fastening points on filter equipment This type of part is especially useful for technicians or owners who regularly service Sta Rite or Pentair System 3 equipment and want a more reliable way to engage the original fastener or socket geometry