The OTR EX225_H2_(LG Radius) Air Disc Brake Pad ensures Expertise Built In™, with post-cured and treated with aluminum oxide to remove possible initial break-in. These heavy duty air disc brake pad replacements are mechanically attached to the semi truck's brake caliper assembly for enhanced shear strength, which eliminates the potential for pad separation from the backing plate. FleetPride is your First Click in Heavy Duty®.