Prepare your vehicle to be Ready for the Road Ahead with fast-acting brakes, with the Redneck Trailer Supplies 12-1/4" x 3-3/8" Brake Magnet - Yellow Wire. This replacement part pushes the actuating arm of the brake drum out to engage the brakes, and effectively bring the vehicle to a stop. Once equipped, this small device plays a crucial role in slowing down vehicles and trailers. FleetPride is your First Click in Heavy Duty .