The Pagid Disc Brake Pad Wear Sensor Set (part number 355251921) is a set of sensors designed to measure the wear of disc brake pads on a vehicle. These sensors are specifically designed for use with Pagid brake pads, and are made from high-quality materials to ensure accurate and reliable readings. The set includes two sensors, one for the left side and one for the right side, and they are easy to install and replace. The sensors work by detecting the distance between the brake pad and the brake disc, and when the pad wears down to a certain level, the sensor will trigger a warning light on the dashboard to alert the driver that it is time to replace the brake pads. This helps to prevent excessive wear on the brake discs and ensures safe and efficient braking. The Pagid Disc Brake Pad Wear Sensor Set is a crucial component for maintaining the performance and safety of your vehicle's braking system.