About This Designed for hassle-free replacement, this miter saw trigger switch (compatible with DW712, DW715, DW716, DW717, DW718, DWS780) can be easily installed without any special tools. Made of durable high quality materials. Compact and sturdy, built to last. 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. Some common signs of a broken or failing switch are: Tool has completely stopped functioning - it will not turn on Tool operates intermittently, requiring miltiple tries to turn on, until eventually it won't turn on at all Variable speed function and electric braking aren't working properly. Please confirm that the model you need to buy matches our model before ordering. Overview Brand : GZJoSum Color : N548978 Blade Material : High Speed Steel Surface Recommendation : Wood Power Source : Battery Powered