The Rockford Fosgate Prime R1525X2 5.25" 2-Way Coaxial Car Speakers are a high-quality full-range speaker system designed for car audio systems. With a nominal diameter of 5.25 inches, these speakers offer great sound quality and performance. The Rockford Fosgate brand is known for producing top-notch car audio products, making these speakers a reliable choice for enhancing your car's audio system.