Air brake shoes; air brake linings; air brake blocks; hydraulic disc pads; hydraulic brake rotors; hydraulic brake calipers; air disc pads; air disc and drum brakes for motor vehicle trucks and semi-trailers; heavy duty brake shoe hardware kits consisting of brake rollers, anchor pins, anchor pin bushings, return springs, retainer springs and retainer clips sold as a kit; heavy duty s-cam shafts; heavy duty cam repair kits; heavy duty truck air drum brake camshaft automatic slack adjusters; heavy duty brake drums; heavy duty brake chambers; air drum brakes for motor vehicle trucks and semi-trailers; motor vehicle truck and semi-trailer air drum brake components, namely, cam shafts, cam installation kits (consisting of bushings, spacers, bolts, washers, and tubes sold as a kit), air chambers and brake wear sensors; s-cams; air brake chambers and spring brakes; air brake slack adjusters; motor vehicle truck and semi-trailer air brake hardware, namely, cam shafts, cam installation kits (consisting of bushings, spacers, bolts, washers, and tubes sold as a kit), air chambers and brake wear sensors; brake pads for motor vehicle trucks and semi-trailers; brake rotors for motor vehicle trucks and semi-trailers; hydraulic calipers; motor vehicle truck and semi-trailer air brake hardware, namely, cam shafts, cam installation kits (consisting of bushings, spacers, bolts, washers, and tubes sold as a kit), air chambers and brake wear sensors; air disc rotors; air disc hardware; air disc calipers