This replacement switch restores reliable control for circular saws by replacing worn mechanical internals. It combines on/off and variable speed in one unit, delivering smoother starts and steadier cuts. - Replaces aging switches to restore consistent power and speed control, reducing unexpected starts. - All in one design provides on/off and variable speed in a compact module. - Durable job site construction with a compact polymer housing and copper contacts for long service life. - Compatibility and build - Designed for many circular saw models that use a standard dual function switch. - Compact footprint, easy installation, corrosion resistant materials. - Performance - Smooth throttle response and precise speed control under load - Reliable operation and extended switch life in workshop or job site. - Use scenarios - Framing: quick on/off and adjustable speed for accurate cuts and reduced kickback. - Plywood or trim work: steady speed for clean edges and consistent finish. - DIY renovations: fast replacement minimizes downtime when a switch fails.