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 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.