The OTR SB7, SN7 Air Disc Brake Pad, being made with Expertise Built In™, has post-cured and treated with aluminum oxide to eliminate possible initial break-in. These heavy duty air disc brake pad replacements are mechanically attached to the semi truck's brake caliper assembly for improved shear strength, which removes the potential for pad separation from the backing plate. FleetPride is your First Click in Heavy Duty®.