Compatible with all ZF TRAXON 12TX series AMT gearboxes, made of high-hardness bearing steel with overall quenching hardening treatment, possessing strong compression, bending, wear and deformation resistance. The surface is professionally treated with anti-rust and anti-corrosion craft to withstand harsh working conditions such as high temperature and oil pollution. With accurate installation positioning and close cooperation with various brake components, it runs smoothly without looseness or abnormal noise. It effectively strengthens the structural stability of the brake assembly and is fully applicable to long-term heavy-duty driving of heavy trucks.