Cordless Electric Drill Speed Controller Dustproof Push Button Trigger Switch Universal compatibility: Fits a wide range of electric hand drills and power tools. Serves as a reliable replacement for damaged or broken switches, restoring seamless functionality. Easy and intuitive speed control: Start the drill by pressing the switch button, then press further to adjust speed. Enables precise control for different materials and tasks. Simple installation: Designed for straightforward mounting on electric hand drills. Quickly old or faulty switches with minimal effort and without special tools. Enhanced visibility and performance: Builtin small light provides illumination in dim work areas, improving accuracy and reducing errors during drilling. Durable and dustproof design: Constructed to withstand typical workshop conditions, helping ensure reliable operation over time. Key attributes at a glance: function dustproof push button trigger switch with speed control and builtin light; compatibility broad fit across drills and power tools; size and fit compact design that suits standard trigger slots; material and construction durable dustproof housing; performance responsive speed control with integrated lighting. Practical use scenarios: Replacing a wornout switch on a cordless drill during a woodworking project to restore variable speed control. Drilling in metal or plastic where precise speed control improves finish and reduces tool chatter. Working in dim garages or on latenight projects where the builtin light helps improve targeting and accuracy.