Raybestos 713020 Professional Grade Wheel Hub and Bearing Assembly Quality value designed to match Original Equipment fit, form and function Semi-metallic, ceramic and organic formulas available for best application use Slots, chamfers and shims where applicable Integral electronic wear sensors where applicable Designed to stop the vehicle with minimal noise and dusting Manufactured from high grade semi-metallic materials Friction materials engineered for safe and quiet braking Provides high performance braking 90% to 95% Coverage