American Valve 12789 3/4" ScaleRX Ion Polarization Scale Reduction System for Water Heaters size_4-3/4" 4 mm) Magnetic: No Bit

4 mm) Magnetic: No Bit Retention: Quick change Shank Length: 1

Very fluid alloy flow

Armstrong Cutter:   1T

all with just one tool

Hollow shaft allows for nut driving on unlimited bolt length

American Valve 12789 3/4" ScaleRX Ion Polarization Scale Reduction System for Water Heaters size_4-3/4" 4 mm) Magnetic: No BitAmerican Valve 12789 3 4" ScaleRX Ion Polarization Scale Reduction System for Water Heaters ScaleRX protects your water heater from limescale build up and keeps it running efficiently. It requires no power supply, batteries, chemicals, or filters. ScaleRX uses a patented Turbulent Galvanic Polarization (TGP) system to disrupt the formation of limescale crystals on water heater elements. In side by side comparison testing, ScaleRX was four times more