This is a 20 Amp Aftermarket Trigger on-off switch used on numerous power tools. Can be used as a replacement on Skil worm drive saw P/N 2610321608 and Ryobi/Ridgid P/N 760245002.Switches are commonly replaced parts in power tools. A switch handles all on/off and variable speed functions. They also have a role in electric breaking; they can momentarily reverse electrical polarity. Because switches use mechanical internals, they tend to degrade and wear out over time, eventually requiring replacement.