Product Details: The Webb 16.5" x 8.62" Outboard Mount Balanced Brake Drum ensures you are Ready for the Road Ahead™ as an unparalleled solution for the high heat produced by decreased air flow from trailer skirts. This brake drum boasts licensed Cool Running Technology vents that are uniquely designed to handle 10% more heat than competitors. This heavy duty brake drum replacement undergoes rigorous testing in an ISO9001 certified plant with world class quality management systems to ensure heavy duty maximum brake performance of your truck. You can expect extended durability and great heat dissipation throughout the long lasting life of this brake drum. This heavy duty brake drum replacement is designed, cast, and machined to all applicable industry standards, restoring your semi truck’s brake assembly to its original condition. FleetPride is your First Click in Heavy Duty®.