This is an authentic replacement part that has been sourced from the original manufacturer to be used with trimmers and chainsaws from Husqvarna. The spark plug is threaded and screws into the cylinder. The plug creates an electric arc that ignites the fuel/air mixture inside the combustion chamber. A spark plug wrench is needed to install this item.
This is an authentic Ryobi replacement part that has been sourced from the original manufacturer to be used with routers. The switch assembly is used to relay electricity from the power cord to the motor assembly. This item is available as an individual replacement part.