The ADB22X,SK7 Air Disc Brake Pad, being made with Expertise Built In™, is post-cured and treated with aluminum oxide to get rid of potential initial break-in. These heavy duty air disc brake pad replacements are mechanically attached to the semi truck's brake caliper assembly for boosted shear strength, which eliminates the potential for pad separation from the backing plate. FleetPride is your First Click in Heavy Duty®.