The Meritor 15" x 4" Brake Drum is a top-of-the-line brake drum designed to provide exceptional stopping power for heavy-duty vehicles. With a brake size of 15" x 4" and a 10-bolt hole pattern, this brake drum is compatible with a wide range of vehicles. The X30 Balanced type brake drum ensures a smooth and stable braking experience, while the drums' overall depth of 8.89" ensures an accurate fit with the braking system. The mounting pilot diameter of 8.99" ensures a secure and reliable fit, giving you peace of mind when you're on the road. This brake drum is made from high-quality cast iron material, ensuring durability and longevity. Compared to lightweight steel shell composite brake drums, the brake drum provides reduced brake noise, making for a quieter and more comfortable ride. If you're looking for a reliable and high-performing brake drum for your heavy-duty vehicle, the brake drum is an excellent choice. With its exceptional stopping power, accurate fit, and reduced brake noise, this brake drum is sure to exceed your expectations. FleetPride is your First Click in Heavy Duty®.