Raybestos 904PG Professional Grade Drum Brake Shoe Set Specifically engineered to provide premium performance for everyday driving conditions Application specific semi-metallic, ceramic and organic friction materials with First To Market coverage Shim materials quiet noise, vibration and harshness Consistent fit, form and function including slots and chamfers when designed by Original Equipment Abutment clips and integral electronic wear sensors included where applicable Designed to improve braking performance Made from premium quality material Resists abrasion and organic solvents Features 100% non-asbestos formulations Ensures better braking performance with minimal noise and heat generation