This aftermarket on-off Trigger switch with lock function replaces Skil worm drive saw switch 2610321608 and Ryobi worm drive saw switch 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. These high quality switches can fit in many Skil/Bosch Circular Saw models and Ryobi Circular Saws.