My 120V radial arm saw had an On/Off toggle switch mounted on the front of the cabinet base -- easy to inadvertently turn on with my knee, difficult to quickly locate if needed -- an accident waiting to happen. Replaced the switch with this Grizzly 120V switch. It's not obvious in the switch description, but this switch is a magnetic switch, meaning that if you have a power failure while the switch is On then the switch will revert to the Off state so that your tool with not restart when power is restored. This is good! But, the switch needs a 120V neutral wire for the magnetic feature to work. You might find that your present switch box does not have a neutral wire, but just the line and load wires, so you'll need to run a neutral wire to the switch line-side neutral terminal. Doesn't need to be a large gauge wire, even 22 gauge will do. The switch instructions show passing the neutral wire through the switch. Do not do this! NEVER switch a neutral wire -- let me repeat -- NEVER switch a neutral wire. If your switch box does have a neutral wire then keep it intact and instead run a pigtail to the switch line-side neutral terminal. The switch terminals are 1/4" FASTON male, so you'll need 3 1/4" FASTON female connectors for the installation. Overall, an excellent product -- magnetic switch, recessed On button, large easy-to-locate Off paddle (even with knee), fits standard electric box, On button can be locked out with a small diameter shank padlock (though I won't use this feature).