Electrical Power Trigger Switch Replacement for Circular Saws Grinders, L50 Aftermarket Trigger Switch replaces for 651172-0, 651121-7, 651168-1. Trigger Switch Voltage: 125/250V, Amperage:24A/12A. Compatible with: 5007S Circular Saw, 5007NB Circular Saw, 5008NB Circular Saw, 5007FK Circular Saw, 5007NBK Type 1 7-1/4inch 15A Heavy-Gauge Aluminium Base Circular Saw, GA6010Z 10.5A 6inch Cutoff / Angle Grinder, GA5010Z 10.5A 5inch Angle Grinder, 5057KB 7-1/4inch Circular Saw, 5007F 7-1/4inch Circular Saw with Brake, GA5010, GA6010. 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 't turn on at all Variable speed function and electric aren't working properly. Please note:There is a slight color difference or discrepancy in kind, please don't mind, thank you! Colour:Black Material:Plastic Package Contents: 1 * Trigger Switch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.