Brake drums are essential components of a vehicle's braking system, working in conjunction with brake shoes to create friction and slow or stop wheel rotation. Found on the rear axles of many passenger cars and commercial vehicles, and sometimes on all four wheels of heavier duty applications, these drums house the brake shoes and provide a surface for them to press against during braking. Manufactured from durable materials like cast iron or composite materials, brake drums must withstand high temperatures and significant mechanical stress. Key characteristics include diameter, width, and the number/type of mounting holes. Examples in this category include Febi brake drums like MPN FEBI02203 for specific passenger car applications, and heavier-duty drums such as FEBI31617 and FEBI31616 designed for Volvo Trucks.