size: S 420x180mm,S420x200mm,S420x220mm, be used for 12T/14T/16T Trailer axles size: S 420x180mm,S420x200mm,S420x220mm;be made of Non-asbestos friction lining be used for 12T/14T/16T Trailer axlesOEM number: HS05.091.29.92.0, HS05.091.46.14.0, HS05.091.28.28.0 commercial trailer brake shoe assembly