"Semi-metallic" generally refers to a material that contains a combination of metallic and non-metallic components. This term is commonly used in various contexts:1. **Brake Pads:** - *Composition:* In the context of brake pads, "semi-metallic" refers to a type of brake pad that contains a mix of

Auto wheel hubs, also known as wheel hub assemblies, are important components in a vehicle's suspension system. These assemblies house the wheel bearings and are typically located between the brake rotor and the drive axle. They play a critical role in supporting the vehicle's weight and allowing the wheels to rotate smoothly. Here are some key points about auto wheel hubs: