Multi-Tork MTJ-770 Dual Geometry Socket Polycarbonate for Pentair Sta-Rite System3 D.E. & Component Cartridge Pool Filters
The 770 is one of the most popular sockets in the line. Its Dual Geometry design captures the original 2.25 System 3 clamp knob and the newer 3 filter knob. The video shows immediately how much service time is cut with this socket.
