The Gunite 15" x 4" Outboard Mount Brake Drum is the perfect addition to your braking system. Made from high-quality cast iron material, this brake drum is designed for outboard drum mounting and provides excellent stopping power. With a drum's overall depth of 9", you can be sure of an accurate fit with your braking system. The mounting flange thickness is .5", ensuring a secure and reliable fit. Plus, you'll experience reduced brake noise compared to lightweight steel shell composite brake drums. Invest in this brake drum for a reliable and efficient braking system. FleetPride is your First Click in Heavy Duty®.